Geology and Natural History. 63 
McPherson, Nebraska, and, accompanied by an escort of two com- 
panies of U.S. cavalry, proceeded to the Niobrara, and worked in 
k ; 
8 
animals were discovered, and ample material secured for a in- 
vestigation of those previously known from that region, 
A . * 
second expedition was made in August from Fort Bridger, 
Wyoming, and large collections of Eocene fossil vertebrates were 
plete the study of those previously found. All of the collections 
secured are now in the Museum of Yale College. 
4. Contributions to American Botany; by Sereno Watson. 
I, Il and III, 1873.—Although these important papers have been 
somewhat freely distributed among botanists, yet it may be use- 
ful here to note their contents, and to state where copies may 
be obtained. These and almost all similar publications, separate 
issues of articles contributed to scientific journals and proceedings 
of societies, may be had ‘from, the Naturalists’ Agency, Salem, 
_ The great convenience of such a medium, and its impor- 
tance in saving time, trouble and expense, are beginning to be ap- 
preciated. 
t. Watson’s Contribution No. 1. consists of recent gleanings 
from a field from which he gathered the first harvest in his botani- 
eal exploration along the 40th parallel under Clarence King. 
aga demand for the fine quarto volume, in which the results of 
18 own botanical explorations through Nevada and Utah are 
contained, gives some idea of the value of the work. Two recent 
* 
n for study, the new species they contained are here published 
in brief di . . N 
oses, in the Ameri 
tahensis, an 
let of five or 
six pages, and, we are sorry . ly paged. The — 
editors of th j t ill hereafter keep the original — 
ors of the Naturalist, we trust, will es mg : ‘ie med 
