EAST HUMBOLDT RANGE, 541 



breaks. It runs a considerable stream of clear water toward the lake, but 



leaves, upon evaporation, a thin crust of alkaline salts. 



This incrustation, upon being subjected to chemical anal57-sis by Mr. 



R. W. Woodward, yielded the following result : 



Soda 35.66 



Sodium 9.79 



Potassa - 1.04 



Carbonic acid — 15.27 



Carbonic acid (excess over monocarbonate) 3.35 



Sulphuric acid 19.99 



Chlorine 15.15 



Boracic acid trace 



Phosphoric acid trace 



100.25 

 Combining bases with acids, we have : 



Carbonate and sesquicarbonate of soda 39.04 



Sulphate of soda 33.88 



Sulphate of potassa 1.94 



Chloride of sodium 24.96 



Excess of sulphuric acid 0.43 



100.25 

 In Ruby Valley, near the northeast shore of Ruby Lake, another hot 

 spring reaches the surface, which deposits upon evaporation a siliceous 

 sinter, a product of much less common occurrence from hot springs in 

 Nevada than are the salts of the alkalies. This incrustation yielded Mr. 

 R. W. Woodward : 



Silica 88.79 



Alumina , 1.75 



Ferric oxide - trace 



Lime 0.80 



Soda - L06 



Potassa 0.27 



Water 7.33 



fii 



100.00 

 The analysis shows only 3.88 per cent, of basic elements. 



