ECONOMIC GEOLOGY. 251 



Mineral analysis and classification of water from dug well of Ibarra & Gosling, 4 kilo- 

 meters north of Santo Domingo City. 



I Well 40 meters deep; altitude of mouth about 60 meters. Sample collectedly C. P. Ross April 7, 1919 



Analyst, Addie T. Geiger.] 



_... ,_._. Constituents. Parts per million. 



Sibca (S1O2) 14 



Iron (Fe) 42 



Calcium (Ca) 1q§ 



Magnesium (Mg) 34 



Sodium and potassium (Na+K), calculated 126 



Carbonate radicle (C0 3 ) 



Bicarbonate radicle (HC0 3 ) 352 



Sulphate radicle (S0 4 ) 47 



Chloride radicle (CI) 233 



Nitrate radicle (N0 3 ) 19 



Total dissolved solids 753 



Organic matter lg 



Classification. 



Quality for boiler use j3 ac j 



Quality for domestic use Poor 



Quality for irrigation ' p a j r 



Chemical character NaCl 



Mineral content High 



Mineral analysis and classification of water from Bombita Spring, on bank of Rio Isabela 

 about 3 kilometers west of north of Santo Domingo City. 

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



„.,. ,_._, Constituents. Parts per million. 



Silica (S1O2) 20 



Iron (Fe) ' 41 



Calcium (Ca) Hg 



Magnesium (Mg) 42 



Sodium and potassium (Na+K) 3Qg 



Carbonate radicle (C0 3 ) q 



Bicarbonate radicle (HC0 3 ) 33g 



Sulphate radicle (S0 4 ) gg 



Chloride radicle (CI) 504 



Nitrate radicle (NO3) g 7 



Total dissolved solids 1273 



Organic matter g7 



Classification. 



Quality for boiler use y e .. y k a( j 



Quality for domestic use Poor 



Quality for irrigation Poor 



Mineral content High 



Chemical character NaCl 



