pr 



inutri of flje Puscum oi C-omgaraiifo j&wlflflij 



AT HARVARD COLLEGE. 



Vol. VI. No. 1. 



THE 



AURIFEROUS GRAVELS 



OF THE SIERRA NEVADA OF CALIFORNIA 



By J. D. WHITNEY. 



CAMBRIDGE: 



©rime* for tfie jfluseum. 



1880. 



