Paleontological Discovery. 359 
existence in the Tertiary, both in Europe and America. The 
this record, America, I believe, will do her full share, and 
thus aid in the solution of the great problems now before us. 
ll. Buti 
imagination the rapidly converging lines of research pursued 
to-day, they seem to meet at the point where oe. and 
organic nature become one. That this point yet be 
ched, I cannot doubt. 
* Auriferous Gravels of the Sierra Nevada of California. 1879. 
