302 



Tvve;nty-se:venth Annual Report 



shallow suction to fill an elevated tank for domestic use. The surface 

 flow, which is agreeably black alkaline and soft, accumulates in the top 

 of the well when the larger, deeper-set irrigating pump is at rest, but 

 its volume is not sufhcient to afifect in any marked way the more 

 abundant flow of most excellent hard irrigating water met at greater 

 depths. The composition of the two waters is given in Table XXIV. 



table; xxiv. 



COMPOSITION OF DIFFERENT WATERS FROM THE SAME 



well; PARTS PER 100,000 



Upper scanty flow 

 domestic water 



Lower abundant flow 

 irrigating water 



Solids at 110° C 



Chlorides as NaCl.... 

 Permanent hardness as 



CaS04 



Temporary hardness as 



Ca(HCa)2 



Black alkali as Na.CO^ 



39.0 

 3.0 



4.3 



23.5 



A. E \^INS0N, 



Biochemist. 

 C. N. Catlin, 

 Asst. Chemist. 



