ABSTRACTS 



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 this issue. 



GEOCHEMISTRY.— T^afer analyses from the lahoratonj of the U. S. 



Geological Survey. F. W. Clarke. U. S. Geological Survey, 



Water-Supply Paper, 364. Pp. 40. 1914. 



This paper is a compilation of 203 analyses of river, lake, spring, 



well and mine waters made by the chemists of the Geological Survey. 



Among them are included the important series of analyses of waters 



from the Yellowstone National Park, originally published in Bull. 47. 



F. W. C. 



GEOCHEMISTRY. —Quality of the surface waters of Washington. 

 Walton Van Winkle. U. S. Geological Survey Water-Supply 

 Paper 339. Pp. 105. 1914. (Prepared in cooperation with the 

 State Board of Health of Washington). 

 Serial analyses of water collected for a year at 17 stations on the 

 principal rivers of Washington are reported and discussed in connection 

 with geologic, climatic, and economic conditions. The streams are low 

 in mineral content and. excellent for general industrial use and irriga- 

 tion, being comparable in quality to the extremely soft waters of New 

 England. All the waters belong to the calcium carbonate types, the 

 content of sulphate is not large, and chlorine is very low. The water 

 of Columbia River was under study for two years at Cascade Locks, 

 the lowest sampling point above tide-water. The stream ranges from 

 68 to 129 parts per million of dissolved solids and averages 94 parts 

 with a hardness of 58 parts. It carries an average of only 26 parts per 

 million of suspended matter; calculations show that it is denuding its 

 drainage basin at a rate of 100 to 150 tons of rock material per square 

 inile per annum. 



R. B. Dole. . 

 606 



