290 The Philippine Journal of Science i9u 



SPRINGS 



There are large numbers of springs in the Philippines, many of 

 which are credited with medicinal properties. Thermal springs 

 are numerous, and there are many springs which are heavily 

 charged with gases or with mineral salts. These are discussed 

 under a separate head on page 381. Sanitary analyses of Phil- 

 ippine springs are given in Table IV. 



