56 The American Naturalist. 
© Mr. R. A. F. Penrose records the discovery of a Plistocene 1 
ganese deposit near Goleonda, Nevada. The ore occurs as a lentil 
mass in a soft calcareous tufa, and probably represents a local pre 
tation from spring waters. The position and nature of the ore sl 
that the bed was laid down in shallow water and subsequently cove 
over by a tufa deposited from the supersaturated lake water. (Jou 
Geol., Vol. I, 1893.) 
