346 The Philippine Journal of Science 1914 



for domestic or laundry and irrigation purposes. By furnishing 

 analytical data with regard to the waters of the Philippines, we 

 hope to give information concerning the suitability of various 

 waters for industrial purposes, the cause of difficulties arising 

 from their use, and the possibility of improving them. 



The ordinary analytical methods used in the examination of 

 water permit of accurate determinations of the total solid matter 

 and of the elements and radicals present. The treatment of the 

 total solid matter with a small amount of water sufficient to 

 dissolve the alkali salts will more or less approximately separate 

 the scale-forming from the nonscale-forming ingredients. To go 

 further than this in an expression of the salts and compounds 

 present in water is largely a matter of conjecture.-^ Table VII 

 contains technical analyses of waters throughout the Philippine 

 Islands.^* 



"Cf. Hendrixson, U. S. Geol. Surv., Water-Supply Paper (1912), 293, 

 136. 



'-* Sanitary analyses of water from deep wells are included in Table VI. 



