70 General Notes. [January, 
Oregon?! and California? which were confirmatory of the exist- 
ence of man in the Upper Pliocene of both those States, but the 
evidence is in neither case absolutely conclusive. 
The discovery that the tracks of several species of Pliocene 
Mammalia? in the argillaceous sandstones of the quarry of the 
Nevada State Prison at Carson, are accompanied by those of a 
biped resembling man, is a further confirmation of these views. 
The tracks are clearly those of a biped, and are not those of a 
member of the Simiidz, but must be referred to the Hominidz. 
Whether they belong toa species of the genus Homo or not, 
The Carson Footprints. 2 
cannot be ascertained from the tracks alone, but can be deter- 
mined on the discovery of the bones and teeth. In any case the — 
animal was probably the ancestor of existing man, and was à- 
contemporary of the Llephas primigenius and a species at 
Egu 
We give two cuts of these tracks, extracted from a paper read 
by Dr. Harkness of San ran before the California Acad- 
emy of Sciences.—E. D. Coj 
1 AMERICAN NATURALIST, 1878, p. 125. i 
1 Loc. cit., 1880, p. 62. 3 Loc. cit., 1882, pp. 195 and 921. 
