Bui. 54, U. S. Dept. of Agriculture. 



Plate III 



Fig. 1.— Southeast Corner of Abert Lake, Oreg. 



[The high-water line of the ancient lake is visible about one-fourth way up the mountain slope 



on the right.] 



Fig. 2.— Playa of Alkali Lake, Oreg. 

 [.Showing tlie Lahontan period lake terraces at the foot of the incjuntains in tlie distance.] 



