Sir Thomas Mitchell's Angular Observations and Field-Note Sketches of Newcastle.

206 Pages·2009·12.56 MB·English

2009

Sir Thomas Mitchells
Angular Observations
and Field-Note
Sketches of Newcastle

Chris Towers 3060420 and Troy Sumner 30591P5a1g e | i
29/10/2009
Executive Summary
The aim of this student project was to decipher the field notes and observations of Thomas Mitchell (later Sir
Thomas Mitchell) when he performed a survey in Newcastle in 1828. Another aim was to determine the accuracy
of these observations and of Thomas Mitchell’s drawings on his field notes of the Newcastle area. Mitchell was
appointed Surveyor-General of NSW in 1828 and continued this role until his death in 1855. He was a talented
artist and throughout the investigations within this report it will be shown how accurate and ‘true to life’ his
drawings were.
The approach taken in this project was to firstly decipher his surveying observations of Newcastle. With this
information, they were overlaid with the 1830 Armstrong plan, of Newcastle and, using locations that are easily
recognisable and of higher accuracy, resections were performed to calculate the
positions of Mitchell’s survey station setups, then in turn the positions of his
observations. The determination of each station and point, in MGA coordinates,
allowed the calculation of the error in his readings and thus ascertain the accuracy.
Results confirmed that Mitchell’s observations were remarkable, given the
instrument used, with the range of observations of the resected stations being ±0.5
to 15.1m (East) and ±0.9 to 3.8m (North). Positional accuracy of all points was
±6.8m (East) and ±2.1m (North) and the greatest error of Mitchell’s elevation
observations reached 2 minutes which is very impressive considering the accuracy
of Mitchell’s theodolite to be in the order of 5 minutes.
With the observations deciphered, the accuracy of the drawings could be
determined by projecting the points observed on the detailed sketches in his field-
notes to the base of the image and then overlaying his angular observations to
determine the angular difference of his observations and the angles projected by
the drawing.
It was found that Mitchell’s drawings were quite accurate, with achieving angular
accuracies of up to 0°36’ which is quite astounding as this difference is near
imperceptible for hand-drawn sketches. Note that 0°36’ approximates to a
horizontal side error of 1:100, i.e. One metre in 100 metres.

Page | i
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

Table of Contents
Executive Summary ___________________________________________________________________ i
Table of Contents _____________________________________________________________________ ii
List of Figures and Tables ______________________________________________________________ v
1 Introduction _____________________________________________________________________ 1
2 Instrument Used By Sir Thomas Mitchell ______________________________________________ 5
3 Mitchell’s Observations And Sketches _________________________________________________ 6
3.1 Sketch of Prospect Hill ________________________________________________________________ 6
3.2 Sketch of Signal Hill __________________________________________________________________ 11
3.3 Sketch of Nobby’s ___________________________________________________________________ 15
3.4 First Page of Observations ____________________________________________________________ 17
3.5 Second Page of Observations __________________________________________________________ 18
4 Mitchell’s Stations _______________________________________________________________ 20
4.1 Station 1 __________________________________________________________________________ 20
4.2 Station 2 __________________________________________________________________________ 27
4.3 Station 3 __________________________________________________________________________ 34
4.4 Station 4 __________________________________________________________________________ 38
4.5 Station 5 __________________________________________________________________________ 39
4.6 Station 6 __________________________________________________________________________ 42
4.7 Station 7 __________________________________________________________________________ 45
4.8 Station 8 __________________________________________________________________________ 47
4.9 Station 9 __________________________________________________________________________ 50
4.10 Station 10 _________________________________________________________________________ 53
4.11 Station 11 _________________________________________________________________________ 57
4.12 Station 12 _________________________________________________________________________ 60
4.13 Station 13 _________________________________________________________________________ 61
4.14 Station 14 _________________________________________________________________________ 64
4.15 Station 15 _________________________________________________________________________ 67
5 Determination of Point Locations ___________________________________________________ 69
Page | ii
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

5.1 First Attempt with Transparency Overlays _______________________________________________ 69
5.2 Second Attempt using AutoCAD ________________________________________________________ 72
5.3 Orientation of 1830 Armstrong Plan ____________________________________________________ 75
5.4 Resection __________________________________________________________________________ 77
6 Mitchell’s Resected Stations _______________________________________________________ 79
6.1 Accuracy of Mitchell’s Resected Stations _________________________________________________ 81
7 Mitchell’s Observed Points _________________________________________________________ 82
7.1 Accuracy of Mitchell’s Observed Points __________________________________________________ 87
7.2 Accuracy of Mitchell’s Observed Points In Relation To The Armstrong Plan _____________________ 88
8 Sir Thomas Mitchell’s Elevation Observations _________________________________________ 89
9 Accuracy of Sir Thomas Mitchell’s Drawings___________________________________________ 93
9.1 Method for Determination of Accuracy of Field Notes ______________________________________ 93
9.2 Determination of Accuracy of Mitchell’s Field Note Sketches ________________________________ 96
9.3 Determination of Accuracy of Artists Perspective of Newcastle ______________________________ 99
10 Results ______________________________________________________________________ 102
10.1 Accuracy of Mitchell’s Field Note Sketches ______________________________________________ 102
10.1.1 Station at Bonfire on Signal Hill ____________________________________________________________102
10.1.2 Station at the Windmill __________________________________________________________________104
10.1.3 Discussion of Accuracy of Mitchell’s Field Note Sketches ________________________________________106
10.2 Accuracy of Joseph Cross’ Painting_____________________________________________________ 107
10.3 Accuracy of Mitchell’s Sketches compared to Joseph Cross’ Painting _________________________ 109
11 Conclusions __________________________________________________________________ 111
12 Acknowledgements ___________________________________________________________ 112
13 Bibliography _________________________________________________________________ 113
APPENDIX A _________________________________________________________________________ I
Calculation of Station and Observation Locations ________________________________________________ I
a. Station at g __________________________________________________________________________________ I
b. Station at Bonfire ____________________________________________________________________________ III
c. Station 3 at 10 ______________________________________________________________________________ V
d. Station at 1 of g _____________________________________________________________________________ VI
e. Station at X ________________________________________________________________________________ VII
f. Station at a ________________________________________________________________________________ VIII
g. Station at Corner Wall and h ___________________________________________________________________ IX
Page | iii
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

h. Station at Dial in Centre of two principal crop street ________________________________________________ X
i. First Fix __________________________________________________________________________________ X
ii. Second Fix ______________________________________________________________________________ XII
iii. Third Fix ________________________________________________________________________________ XIII
i. Station at i ________________________________________________________________________________ XIV
j. Station at (Unknown) of g mill _________________________________________________________________ XV
k. Station at f ________________________________________________________________________________ XVI
i. First Fix _________________________________________________________________________________ XVI
ii. Second Fix _____________________________________________________________________________ XVII
l. Station at low beach _______________________________________________________________________ XVIII
APPENDIX B _______________________________________________________________________ XIX
MGA Coordinates of Observed Points from Resected Stations ____________________________________ XIX
APPENDIX C ______________________________________________________________________ XXV
Calculations for Accuracy of Mitchell’s Field-Note Sketches and Cross’ Painting _____________________ XXV
a. Photo of Lake Macquarie (Check Procedure)_____________________________________________________ XXV
b. Station at Bonfire _________________________________________________________________________ XXVII
i. Fix g, l and m __________________________________________________________________________ XXVII
ii. Fix i, p, and r____________________________________________________________________________ XXIX
iii. Fix a, n, and s ___________________________________________________________________________ XXXI
c. Station at g ______________________________________________________________________________ XXXIII
i. Fix p, n, and h __________________________________________________________________________ XXXIII
ii. Fix 5, k, and i __________________________________________________________________________ XXXV
iii. Fix 7, w, and 10 _______________________________________________________________________ XXXVII
d. Joseph Cross’ 1828 Painting _________________________________________________________________ XXXIX
i. Fix m, 2, and b _________________________________________________________________________ XXXIX
ii. Fix 5, 3, and s ____________________________________________________________________________ XLI
APPENDIX D ______________________________________________________________________ XLIII
Photo’s of Mitchell’s Observed Points as Viewed Today ________________________________________ XLIII
APPENDIX E _______________________________________________________________________ LXV
Point ‘u’ – Government Cottage ____________________________________________________________ LXV
APPENDIX F ______________________________________________________________________ LXVII
STREET NAMES OF NEWCASTLE FROM 1822 TO 1939. __________________________________________ LXVII
APPENDIX G _______________________________________________________________________ LXX
Plans LXX
APPENDIX H _____________________________________________________________________ LXXXI
Project Contributions ___________________________________________________________________ LXXXI

Page | iv
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

List of Figures and Tables
Figure 1 - Salamanca 1812. Capture of the Forts 27th June 1812 _________________________________________________1
Figure 2 - The Map of the Nineteen Counties ________________________________________________________________2
Figure 3 - Western Extremity of Mount Arapiles ______________________________________________________________3
Figure 4 - The Pyramids, Reproduced from Mitchell's Journal of an Expedition into the Interior of Tropical Australia ________3
Figure 5 - Mitchell’s Theodolite (NSW Department of Lands) ____________________________________________________5
Figure 6 -Prospect Hill LHS _______________________________________________________________________________6
Figure 7- Additional features to Prospect Hill LHS _____________________________________________________________8
Figure 8 - Prospect Hill RHS ______________________________________________________________________________9
Figure 9 - Signal Hill LHS _______________________________________________________________________________11
Figure 10 - Signal Hill RHS ______________________________________________________________________________13
Figure 11 - Nobby ____________________________________________________________________________________15
Figure 12 - First Page of Angular Observations ______________________________________________________________17
Figure 13 - Second Page of Angular observations ____________________________________________________________18
Figure 14 - Sketch of Newcastle Harbour from ‘Prospect Hill’ ___________________________________________________19
Figure 15 - Mitchell’s writing style________________________________________________________________________20
Figure 16 - Flagstaff Hill in 2009 _________________________________________________________________________20
Figure 17 - Angular Observations left of ‘m’ ________________________________________________________________21
Figure 18 - Observations anti-clockwise of ‘m’ from Signal Hill _________________________________________________21
Figure 19 - Angular Observations right of ‘m’ _______________________________________________________________22
Figure 20 - Observations clockwise of ‘m’ from Signal Hill _____________________________________________________23
Figure 21 - Angular Observations from Point ‘t’ _____________________________________________________________23
Figure 22 - Observations clockwise of Point t’ from Signal Hill __________________________________________________24
Figure 23 - Station 1 on Armstrong Map ___________________________________________________________________25
Figure 24 - Current location of Station 1 ___________________________________________________________________26
Figure 25 - ‘The Obelisk’ in 1908 _________________________________________________________________________27
Figure 26 - Mitchell’s second station ______________________________________________________________________27
Figure 27 - Prospect Hill in 2009 _________________________________________________________________________28
Figure 28 - Angular Observations anti-clockwise of Station 1 ___________________________________________________29
Figure 29 - Observations left of ‘1st Station’ from Prospect Hill _________________________________________________30
Figure 30 - Angular Observations clockwise of Station 1_______________________________________________________30
Figure 31 - Observations right of ‘1st Station’ from Prospect Hill ________________________________________________31
Figure 32 - Station 2 Coordinates ________________________________________________________________________32
Figure 33 - Current location of Station 2 ___________________________________________________________________33
Figure 34 - Mitchell’s third station________________________________________________________________________34
Figure 35 - Angular observations with 2nd Station ___________________________________________________________34
Figure 36 - Angular observations with 1st Station____________________________________________________________35
Figure 37 - Angular observations from Station 3 _____________________________________________________________35
Figure 38 - Station 3 on Armstrong Map ___________________________________________________________________36
Figure 39 - Current location of Station 3 ___________________________________________________________________37
Figure 40 - View of Breakwater __________________________________________________________________________38
Figure 41 - Angular observations from Station 4 _____________________________________________________________38
Figure 42 - Station 5 on Signal Hill ________________________________________________________________________39
Figure 43 - Angular observations from Station 5 _____________________________________________________________39
Figure 44 - Station 5 on Armstrong Map ___________________________________________________________________40
Page | v
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

Figure 45 - Current location of Station 5 ___________________________________________________________________41
Figure 46 - Station 6 between Signal Hill and Nobby__________________________________________________________42
Figure 47 - Angular observations from Station 6 _____________________________________________________________42
Figure 48 - Station 6 on Armstrong Map ___________________________________________________________________43
Figure 49 - Current location of Station 6 ___________________________________________________________________44
Figure 50 - Flagstaff’s on Signal Hill ______________________________________________________________________45
Figure 51 - Angular observations from Station 7 _____________________________________________________________45
Figure 52 - Point ‘a’ near Signal Hill_______________________________________________________________________47
Figure 53 - Angular observations from Station 8 _____________________________________________________________47
Figure 54 - Station 8 on Armstrong Map ___________________________________________________________________48
Figure 55 - Current location of Station 8 ___________________________________________________________________49
Figure 56 - Corner wall near Point ‘h’ _____________________________________________________________________50
Figure 57 - Angular observations from Station 9 _____________________________________________________________50
Figure 58 - Station 9 on Armstrong Map ___________________________________________________________________51
Figure 59 - Current location of Station 9 ___________________________________________________________________52
Figure 60 - Location of Station 10 ________________________________________________________________________53
Figure 61 - Angular observations from Station 10 ____________________________________________________________53
Figure 62 - Angular observations from Station 10 continued ___________________________________________________54
Figure 63 - Station 10 on Armstrong Map __________________________________________________________________55
Figure 64 - Station 10 on Armstrong Map __________________________________________________________________56
Figure 65 - Location of Point ‘i’ __________________________________________________________________________57
Figure 66 - Angular observations from Station 11 ____________________________________________________________57
Figure 67 - Station 11 on Armstrong Map __________________________________________________________________58
Figure 68 - Current location of Station 11 __________________________________________________________________59
Figure 69 - Distance between Flagstaff’s and Point 10 ________________________________________________________60
Figure 70 - Angular observations from Station 12 ____________________________________________________________60
Figure 71 - Current location of Station 13 __________________________________________________________________61
Figure 72 - Angular observations from Station 13 ____________________________________________________________62
Figure 73 - Point ‘f’ and Signal Hill ________________________________________________________________________64
Figure 74 - Angular observations from Station 14 ____________________________________________________________64
Figure 75 - Newcastle Harbour __________________________________________________________________________65
Figure 76 - Angular observations from Station 14 Continued ___________________________________________________65
Figure 77 - Current location of Station 14 __________________________________________________________________66
Figure 78 - Current location of Station 15 __________________________________________________________________67
Figure 79 - Angular observations from Station 15 ____________________________________________________________67
Figure 80 - Radiations observed from Station at g Overlaid onto a Transparency ___________________________________69
Figure 81 - Manual resection performed with transparencies using points o, b and m as the fixed points ________________70
Figure 82 - Transparency Overlay of radiations observed from Station at g and the Station at Bonfire___________________71
Figure 83 - Raster Image of Armstrong's 1830 Plan __________________________________________________________72
Figure 84 - AutoCAD Project with Mitchell's Observed Radiations from Station at g _________________________________72
Figure 85 - Rotate Command ____________________________________________________________________________73
Figure 86 - Move Command ____________________________________________________________________________74
Figure 87 - Location of Orientation Points __________________________________________________________________75
Figure 88 - Transformation of 1830 Armstrong Plan __________________________________________________________76
Figure 89 - Armstrong's Plan with coordinates of fixed locations for resection calculation ____________________________77
Figure 90 - Directions calculated from resection _____________________________________________________________78
Page | vi
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

Figure 91 - Intersection of points from radiations ____________________________________________________________78
Figure 92 - Vertical angle measured to Flagstaffs ____________________________________________________________89
Figure 93 - Image observed from the instrument location _____________________________________________________93
Figure 94 - Location of Station used to find if method of calculating the accuracy of field notes would work ______________93
Figure 95 - Field Notes of observations taken from Lake Macquarie Park _________________________________________94
Figure 96 - Lines projected to base of image ________________________________________________________________95
Figure 97 - Observed angular differences __________________________________________________________________95
Figure 98 - Rotation of Sketch ___________________________________________________________________________96
Figure 99 - Coordinates of fixed points ____________________________________________________________________96
Figure 100 - Projected lines from Observation Point __________________________________________________________97
Figure 101 - Fixed Points evenly spread over image __________________________________________________________97
Figure 102 - Fixed Points over middle of image ______________________________________________________________98
Figure 103 - Fixed Points at extremities and center of image ___________________________________________________98
Figure 104 - Joseph Cross' "A View from King's Town" ________________________________________________________99
Figure 105 - Site locations of points 1-10 _________________________________________________________________100
Figure 106 - Common Points between Mitchell's Sketch and Cross' Paintings Used for fix ____________________________101
Figure 107 - Fix i, p, and r at Bonfire _____________________________________________________________________102
Figure 108 - Fix g, l, and m at Bonfire ____________________________________________________________________102
Figure 109 - Fix a, n, and s at Bonfire ____________________________________________________________________102
Figure 110 - Fix p, n, and h at the Windmill ________________________________________________________________104
Figure 111 - Fix 5, k, and i at the Windmill ________________________________________________________________104
Figure 112 - Fix 7, w, and 10 at the Windmill ______________________________________________________________104
Figure 113 - Fix m, 2, and b for Cross' Painting _____________________________________________________________107
Figure 114 - Fix 5, 3, and s for Cross' Painting ______________________________________________________________107
Figure 115 - Joseph Cross' 1828 Painting of Newcastle _______________________________________________________109
Figure 116 - Mitchell's Field-note Sketch Observed from the Obelisk over Newcastle _______________________________109
Figure 117 - Approximate location of Point 'a'. Located on Fort Drive, looking at Fort Scratchley ______________________ LIII
Figure 118 - Approximate location of Point 'b'. The old gaol, located at the new apartments overlooking Newcastle Baths _ LIII
Figure 119 - Approximate location of Point 'd'. Located above the Bogey Hole ____________________________________ LIV
Figure 120 - Approximate location of Point 'e'. Located at the top of King Edward Park _____________________________ LIV
Figure 121 - Approximate location of Point 'g'. The position of the old mill, which is now known as the Obelisk. ___________ LV
Figure 122 - Approximate location of Point 'i'. Positioned on Fletcher Park overlooking Newcastle Beach ________________ LV
Figure 123 - Approximate location of Point 'm'. The Christ Church Cathedral observed from Church Street ______________ LVI
Figure 124 - Approximate location of Point 'n' . Observed from Scott Street Looking North __________________________ LVI
Figure 125 - Approximate location of Point 'o'. Located on the edge of the round-a-bout on the corner of Watt St and Wharf
Rd looking South. ____________________________________________________________________________________ LVII
Figure 126 - Approximate location of Point 'p'. Located on the Eastern Side of Custom’s House. ______________________ LVII
Figure 127 - Approximate location of Point 's'. Located at the top of the stairs at Fort Scratchley looking North West ____ LVIII
Figure 128 - Approximate location of Point 'u'. Located in the car park behind the Ibis hotel on Hunter Street. __________ LVIII
Figure 129 - Alternate Approximate location of Point 'u'. Located on the vacant lot to the East of the Hotel Ibis. _________ LIX
Figure 130 - Approximate location of Point '1'. Located at the Southern end of Nobby's Beach _______________________ LIX
Figure 131 - Approximate location of Point '2'. Located off the edge of Nobby's Road (Break Water) looking East. _________ LX
Figure 132 - Approximate location of Point '4'. Located on the western side of Watt Street at the corner of Wharf Rd and Watt
St _________________________________________________________________________________________________ LX
Figure 133 - Approximate location of Point '10'. Located at the top of Watt Street looking North East. _________________ LXI
Figure 134 - Approximate location of Point '11'. Located at the old Newcastle Bowling Club _________________________ LXI
Page | vii
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

Figure 135 - Approximate location of Point 'Diamond'. Located on Memorial Drive overlooking Bar Beach ______________ LXII
Figure 136 - Approximate location of the Station at Bonfire. Located on top of Fort Scratchley looking South West _______ LXII
Figure 137 - Approximate location of Station at 'g'. Located at the Obelisk ______________________________________ LXIII
Figure 138 - Approximate location of Station at 'f'. Located at Strzelecki Lookout. ________________________________ LXIII
Figure 139 - Approximate location of Station at low beach. Located near the Trig Station on Strzelecki Lookout _________ LXIV
Figure 140 - Graphical accuracy of Point 'u' ______________________________________________________________ LXVI
Figure 141 - Approximate location of Point 'u' at ground level ________________________________________________ LXVI

Table 1 - Features on Prospect Hill LHS _____________________________________________________________________7
Table 2 - Additional features to Prospect Hill LHS _____________________________________________________________8
Table 3 - Features on Prospect Hill RHS ____________________________________________________________________10
Table 4 - Features on Signal Hill LHS ______________________________________________________________________12
Table 5 - Features on Signal Hill RHS ______________________________________________________________________14
Table 6 - Features on Nobby ____________________________________________________________________________16
Table 7 - Station 1 Coordinates __________________________________________________________________________24
Table 8 - Station 2 Coordinates __________________________________________________________________________31
Table 9 - Station 3 Coordinates __________________________________________________________________________36
Table 10 - Station 5 Coordinates _________________________________________________________________________40
Table 11 - Station 6 Coordinates _________________________________________________________________________43
Table 12 - Station 8 Coordinates _________________________________________________________________________48
Table 13 - Station 9 Coordinates _________________________________________________________________________51
Table 14 - Station 10 Coordinates ________________________________________________________________________54
Table 15 - Station 11 Coordinates ________________________________________________________________________58
Table 16 - Station 13 Coordinates ________________________________________________________________________63
Table 17- Station 14 Coordinates ________________________________________________________________________66
Table 18 - Station 15 Coordinates ________________________________________________________________________68
Table 19 - Maximum error of the resected stations __________________________________________________________80
Table 20 - Location of station on Armstrong Plan and its current location _________________________________________80
Table 21 - Accuracy of all stations ________________________________________________________________________81
Table 22 - Maximum error of alphabetical Points ____________________________________________________________83
Table 23 - Location of station on Armstrong Plan and its current location _________________________________________84
Table 24 - Maximum error of numerical points ______________________________________________________________85
Table 25 - Location of station on Armstrong Plan and its current location _________________________________________85
Table 26 - Location of station on Armstrong Plan and its current position _________________________________________86
Table 27 - Maximum error of descriptive points _____________________________________________________________86
Table 28 - Accuracy of Mitchell Points _____________________________________________________________________87
Table 29 - Accuracy of Mitchell Points in relation to the Armstrong Plan __________________________________________88
Table 30 - Elevation of Mitchell’s stations __________________________________________________________________90
Table 31 - Distance of Mitchell’s stations to the Flagstaffs _____________________________________________________91
Table 32 - Accuracy of Mitchell's Elevation Angles ___________________________________________________________92
Table 33 - Accuracy of Fix i, p, and r with Outliers a, s, and t __________________________________________________103
Table 34 - Accuracy of Fix g, l, and m with Outlier a _________________________________________________________103
Table 35 - Accuracy of Fix a, n, and s with No Outliers _______________________________________________________103
Table 36 - Accuracy of Fix p, n, and h with Outlier l__________________________________________________________105
Table 37 - Accuracy of Fix 5, k, and i with Outliers l, 10, and 11 ________________________________________________105
Page | viii
Sir Thomas Mitchells Angular Observations and Field-Note Sketches of Newcastle

Table 38 - Accuracy of Fix 7, w, and 10 with Outliers l and 11 _________________________________________________105
Table 39 - Accuracy of Fix m, 2, and b of Cross' Painting______________________________________________________108
Table 40 - Accuracy of Fix 5, 3, and s of Cross' Painting ______________________________________________________108
Table 41 - Coordinates of points used to fix Mitchell's Station at g _______________________________________________ I
Table 42 - Mitchells observed angles between points used for fix ________________________________________________ I
Table 43 - Calculated coordinates of Station at g _____________________________________________________________ I
Table 44 - List of directions from Station at g ________________________________________________________________II
Table 45 - Coordinates of points used to fix Mitchell's Station at Bonfire __________________________________________ III
Table 46 - Mitchells observed angles between points used for fix _______________________________________________ III
Table 47 - Calculated coordinates of Station at Bonfire _______________________________________________________ III
Table 48 - List of directions from Station at Bonfire __________________________________________________________ IV
Table 49 - Coordinates of points used to fix Mitchell's Station 3 at 10 ____________________________________________ V
Table 50 - Mitchell's observed angles between points used for fix _______________________________________________ V
Table 51 - Calculated coordinates of Station 3 at 10 __________________________________________________________ V
Table 52 - List of Directions from Station 3 at 10 ____________________________________________________________ V
Table 53 - Coordinates of points used to fix Mitchell's Station at 1 of g ___________________________________________ VI
Table 54 - Mitchell's observed angles between points used for fix _______________________________________________ VI
Table 55 - Calculated coordinates of Station at 1 of g _________________________________________________________ VI
Table 56 - List of Directions from Station 1 at g _____________________________________________________________ VI
Table 57 - Coordinates of points used to fix Mitchell's Station at X _____________________________________________ VII
Table 58 - Mitchell's observed angles between points used for fix ______________________________________________ VII
Table 59 - Calculated coordinates of Station at X ___________________________________________________________ VII
Table 60 - List of directions from Station at X ______________________________________________________________ VII
Table 61 - Coordinates of points used to fix Mitchell's Station at a _____________________________________________ VIII
Table 62 - Mitchell's observed angles between points used for fix ______________________________________________ VIII
Table 63 - Calculated coordinates of Station at a ___________________________________________________________ VIII
Table 64 - List of Directions from Station at a ______________________________________________________________ VIII
Table 65 - Coordinates of points used to fix Mitchell's Station at Corner Wall and h _________________________________ IX
Table 66 - Mitchell's observed angles between points used for fix _______________________________________________ IX
Table 67 - Calculated coordinates of Station at Corner Wall and h _______________________________________________ IX
Table 68 - List of directions from Station at Corner Wall and h __________________________________________________ IX
Table 69 - Coordinates of points used to fix Mitchell's Station at Dial (1st Fix) ______________________________________ X
Table 70 - Mitchell's observed angles between points used for fix _______________________________________________ X
Table 71 - Calculated coordinates of Station at Dial (1st Fix) ___________________________________________________ X
Table 72 - List of directions from Station at Dial (1st Fix) ______________________________________________________ XI
Table 73 - Coordinates of points used to fix Station at Dial (2nd Fix) _____________________________________________ XII
Table 74 - Mitchell's observed angles between points used for fix ______________________________________________ XII
Table 75 - Calculated coordinates of Station at Dial (2nd Fix) __________________________________________________ XII
Table 76 - List of directions from Station at Dial (2nd Fix) _____________________________________________________ XII
Table 77 - Coordinates of points used to fix Mitchell's Station at Dial (3rd Fix) _____________________________________ XIII
Table 78 - Mitchell's observed angles between points for fix __________________________________________________ XIII
Table 79 - Calculated coordinates of Station at Dial (3rd Fix)___________________________________________________ XIII
Table 80 - List of directions from Station at Dial (3rd Fix)______________________________________________________ XIII
Table 81 - Coordinates of points used to fix Mitchell's Station at i ______________________________________________ XIV
Table 82 - Mitchell's observed angles between points used for fix ______________________________________________ XIV
Table 83 - Calculated coordinates of Station at i ____________________________________________________________ XIV
Page | ix