THE PHILIPPINE 



Journal of Science 



A, Chemical and Geological Sciences 

 AND THE Industries 



Vol. XIII JANUARY, 1918 No. 1 



WATER ANALYSIS IN THE FIELD ^ 



By George W. Heise and A. S. Behrman 



{From the Laboratory of General, Inorganic, and Physical Chemistry, 

 Bureau of Science, Manila) 



ONE PLATE 



Recent developments in water analysis have emphasized the 

 importance of making examinations at the source whenever 

 possible. The work of the Bureau of Science has shown the 

 need of field investigations and the peculiar applicability of 

 field methods to Philippine conditions. Accordingly field work 

 has been made one of the most important features of our study 

 of water supplies. 



Owing to the comparative isolation of the Philippines, the 

 great distance from scientific or manufacturing centers, and the 

 consequent loss of time when apparatus and supplies are pro- 

 cured from abroad, we h?.ve found it necessary, to a large extent, 

 to build our own apparatus, to prepare our own reagents for 

 field use, and to devise and adapt methods suitable to our needs. 



The field work of the Bureau of Science has been carried on 

 for three years. Because of the importance of field methods 

 at the present time, and because workers in as isolated places 

 as the Philippines will continue to be dependent, in a great 

 measure, on their own resources, we have thought it advisable 

 to describe our field methods and apparatus in detail. 



Our methods are based upon those described by Leighton.^ 

 Several changes, however, have been made. A "tabloid" de- 



' Received for publication August, 1917. 



' Leighton, M. 0., Field assay of water, U. S. Geol. Surv., Water Supply 

 Paper (1905), No. 151. 

 151772 



