5 [237] 



In order to obtain this collection, I engaged, at my own expense, the ser- 

 vices of a practical botanist, Mr. Charles Geyer. It does not appear now as 

 complete as it was at one time, owing to the loss of a case containing nearly 

 one-half of my original collection. As it is, I have still reason to believe 

 that it will be no invaluable contribution to the natural history of the Ameri- 

 can territory. I owe my thanks to Mr. Geyer for the fidelity with which 

 he served me. 



Appendix C exhibits a list of fossils, among those of my collection, that 

 belong to some prominent localities indicated in my report. I am far from 

 believing that it is in any way complete ; but it may serve to draw the at- 

 tention of future travellers to the interest connected with the spots that are 

 there designated. 



I am indebted to Professor J. T. Ducatel for the translation of Part I of 

 this report; and to my young, intelligent, and laborious friend, John H, 

 Alexander, esq., civil engineer, for that of Part II. For the public, this 

 acknowledgment alone is necessary, as the feelings of mutnal affection, re- 

 gard, and esteem, growing out of this intercourse, is a matter between our- 

 selves. 



Thus far Mr. Nicollet had writlea of his introduction, when death put an end to his labors, 

 and before he had been able to revise his report, which had been returned to him for that pur- 

 pose, and also to add the astronomical observations upon which his calculations were founded. 

 These observations form parts of his journals, which are to be deposited in the Bureau of the 

 Corps of Topographical Engineers. 



September 13, 1843, 



