250 GEOLOGICAL RECONNAISSANCE OF THE DOxMINICAN REPUBLIC. 



Classification. 



Quality for boiler use Poor. 



Quality for domestic use Poor. 



Quality for irrigation Good. 



Chemical character CaC03 



Mineral content Moderate. 



Mineral analysis and classification of surface water from Arroyo la Sulsa, 14 kilometers 

 north of Santo Domingo City. 

 [Sample collected by C. P. Ross April 7, 1919. Analyst, Addie T. Geiger.] 



Constituents. Parts per million. 



Silica (Si0 2 ) 31 



Iron (Fe) .31 



Calcium (Ca) 121 



Magnesium (Mg) 12 



Sodium and potassium (Na+K), calculated 14 



Carbonate radicle (C0 3 ) .0 



Bicarbonate radicle (HC0 3 ) 428 



Sulphate radicle (S0 4 ) 9.9 



Chloride radicle (CI) 14 



Nitrate radicle (N0 3 ) Tr. 



Total dissolved solids 410 



Organic matter 4 . 8 



Classification. 



Quality for boiler use Poor. 



Quality for domestic use Poor. 



Quality for irrigation Good. 



Chemical character CaC0 3 



Mineral content Moderate. 



Mineral analysis and classification of water from dug well of Gregorio Valois, 13 kilometers 



north of Santo Domingo City. 

 Well 30 meters deep; altitude of mouth about 72 meters. Sample collected by C. P. Ross April 7, 1919. 



Analyst, Addie T. Geiger.] 



Constituents. Parts per million. 



Silica (Si0 2 ) 38 



Iron (Fe) .34 



Calcium (Ca) 91 



Magnesium (Mg) 28 



Sodium and potassium (Na+K), calculated 29 



Carbonate radicle (C0 3 ) .0 



Bicarbonate radicle (HCO3) 446 



Sulphate radicle (S0 4 ) 11 



Chloride radicle (CI) 19 



Nitrate radicle (N0 3 ) 1.4 



Total dissolved solids 426 



Organic matter 6 . 



Classification. 



Quality for boiler use Poor. 



Quality for domestic use Poor. 



Quality for irrigation Good. 



Chemical character CaC0 3 . 



Mineral content Moderate. 



