CoroeiroPulm JOURNEY IN BRAZIL: BY PROFE SOR A DMRS. LOUIS AG SSIZ. H And whenc\~ertheway eemedlong, Orhishe:lrtbegantofail. hewouldsingamorewonderfulsong. Ortellamoremarvelloustale." LOSGFBLLOW. BO TO : TICK OR FIELD r LONDO. : TR"Bl ER & O. 60, PATER. 0 TER RO\Y. 1 6 TO MR. NATHANIEL THAYER, THE FRlEND WHO MADE IT POSSIBLE TO GIYE THIS JOURNEY THE CHARACTER OF A SCffi TlFIC E.XPEDITIO=', i!rbe l~teseltt-Volume IS GRATEFULLY INSCRIBED'ot PREFACE. I the winter of 1865 it became necessary for me, on !lccount ofsome disturbance of my health, to seek a change of scene and climate, with rest from work. Europe was proposed; but though there is much enjoyment for a nnturali t in contact with the active scientific life of the Old World, thore is little intellectual re t. Toward Brazil I was drawn by a lifelong desire. After the death of Spix, when a student of twenty years of age, I had been employed by Martius to describe the fi hes they had brought back with them from their celebrated Bra zilian journey. From that time, the wi h to study this fauna in the regions where it belongs had been an ever-recurring thought with me; a scheme deferred for want of opportunity, but never quite forgotten. The fnct that the Emperor of Brazil was deeply interested in all scientific uudertakings, and had e.:s:pre sed a warm sym pathy with my efforts to establi h a great zoological mu eum in this country, aiding me even by sending collections made expres ly under his order f I' the pur po,e, was an additional incentive. I knew th'1 the head of the government would give me every facilit "I)l' my investigations. evertheless, tempting as wa the pro- VI PREFACE. pect of a ,i'it to Brazil, as a mere vacation it had little charm for me. Single-handed, I could make slight use of the opportunities I should have; and though the ex cursion might be a pleasant one for myself, it would have no important result for science. I could not forget that, had I only the necessary means, I might make col lections on this journey which, whenever our building could be so enlarged as to give room for their exhi bition, would place the Museum in Oambridge on a level with the first in titutions of the kind. But for this a working force would be needed, and I saw no possibil ity of providing for such an lUldertaking. While I was broodinO' over these thoughts I chanced to meet Mr. Na thaniel Thayer, whom I have ever found a generous friend to science. The idea of appealing to him for a scheme oCtill magnitude had not, however, occurred to me; but he introduced the subject, and, after expressing his interest in my proposed journey, added, "You wish, of course, to give it a scientific character; take six assist ants with you, and I will be responsible for all their expenses, personal and scientific." It was so simply said, and seemed to me so great a boon, that at first I hardly believed I had heard him rightly. In the end, I had cause to see in how large and liberal a sense he proffered his support to the expedition, which, as is usual in snch cases, proved longer and more costly than was at first anticipat..:d. Not only did he provide most liberally for a_si...:::..nts, but, until the last specimen was stored in the Museum, he continued to advance whatever sums were