E. DE C. Claeke, C. Teicheet and J. R. H. ]\[c\Vhae. 
2. topogkaphy. 
Tho average annual rainfall of this part of the State is about 
inches and the average evaporation is well over 100 inches; consequentlr 
Lake Cowan, like the many lakes farther inland, is nearly always dry. 
