194 GEOLOGICAL RECONNAISSANCE OF THE DOMIN CAN REPUBLIC. 



Classification. Parts per million. 



Character CaC0 3 



Quality for domestic use Fair 



Quality foi boiler use Poor. 



Quality for irrigation Good. 



Mineral content.. Model ate. 



« Satisfactory for drinking. 



Partial mineral analysis and classification of spring water from Arroyo Quita Corazo, 



Province of Azua. 

 (Samples collected by C. P. Ross, May 27, 1919; analyzed by Addie T. Geiger.] 



Constituents. Parts per million. 



Calcium (Ca) 820 



Sodium (Na) 2149 



Potassium (K) 12 



Chloride radicle (CI) 4786 



Organic matter 4 . 



Total dissolved solids at 180° C 8234 



Classification. a 



Chemical character NaCl 



Quality for domestic use Unfit. 6 



Quality for boiler use Unfit. 



Mineral content Very high. 



o Based upon relatively few determinations but sufficient to establish the classification. 

 6 Unfit for drinking except possibly in small quantities by the passing traveller. 



Mineral analysis and classification of spring water from 5 kilometers south of Barahona, 



Province of Barahona. 



[Samples collected by C. P. Ross, June 5, 1919; analyzed by Addie T. Geiger.] 



Constituents. Parts per million. 



Calcium (Ca) 180 



Sodium (Na) 1951 



Potassium (K)° 75 



Carbonate radicle (C0 3 ) .0 



Bicarbonate radicle (HC0 3 ) 349 



Chloride radicle (CI) 3484 



Organic matter 86 



Total dissolved solids 6594 



Classification. 6 



Character NaCl 



Quality for domestic use Unfit. 



Quality for boiler use Unfit. 



Quality for irrigation Bad. 



Mineral content Very high. 



o Equivalent to 0.00009 per cent potash (K2O) in liquid brine or 1.36 per cent K2O in total solids. 

 b Based upon relatively few determinations but sufficient in number to establish classification. 



TOWNS AND VILLAGES. 



No reliable figures to show the population of the Provinces of Barahona 

 and Azua are available. Most of the people live in towns and villages 

 along the principal rivers or near springs, much of the interior being without 

 a water supply and therefore uninhabited. Many of the place names on 

 the map are applied to agricultural communities spread over several square 



