FOURTEENTH ANNUAL REPORT 9 



The chemical constituents of chaulmoogra oil, by H. C. Brill. 



The ferric chloride test for salycilic acid, by H. C. Brill. 



The chemical purification of swimming pools, by George W. Heise and 



R. H. Aguilar. 

 A study of mothers' milk, by Ariston Guzman. 



Investigation of the medicinal plants of the Philippines, by E. D. Merrill. 

 Some vegetables grown in the Philippines, by F. Agcaoili. 



INSTRTJCTIONS TO DISTEICT HEALTH OFFICERS 



The Director of Health conceived the idea that his district 

 health officers could do their work better, if they had a little 

 idea of the work which is carried on in the Bureau of Science, 

 and would know better how to prepare specimens to be sent to the 

 Bureau of Science for examination, if they took a short course 

 in this work. The Director of Health discussed his plan with 

 the undersigned, and it was approved. The bacteriologists 

 of the Bureau of Science began the instruction on October 11. 

 1915, when Dr. Eugenio Hernando, district health officer of 

 Bulacan; Dr. Rafael Villafranca, district health officer of Ta- 

 yabas ; Dr. Vicente Rivera, district health officer of Laguna ; and 

 Dr. Antonio Fernando, district health officer of Nueva Ecija, were 

 detailed to the Bureau of Science for six weeks of laboratory 

 and practical instruction. These men learned better how to 

 prepare materials and reviewed the most frequently used 

 bacteriological examinations. 



STANDARDIZATION OF SUPPLIES 



For several years the Bureau of Science has been urging the 

 desirability of standardization of supplies and the establishment 

 of certain qualities of material for Government use. The stand- 

 ardization of measuring apparatus in the Islands is well in 

 hand, and as pointed out in my last annual report, as a result of 

 the examination by this Bureau during the past seven years 

 certain materials purchased by the Government were standard- 

 ized and purchased under specifications, and in each instance a 

 remarkable increase in the quality has been noted. On June 

 24, 1914, his Excellency, the Governor-General, issued Executive 

 Order No. 62, appointing a Committee on Standardization of 

 Supplies. Except the Director of the Bureau of Science, all the 

 other members of this committee have resigned during the past 

 year, and I was away on leave in the United States for a period 

 of several months. Since my return the committee has been 

 reorganized and is now endeavoring to eliminate inferior ma- 

 terials and to systematize, classify, and effect economy in the 

 purchase of general supplies. Standardization in chemicals re- 

 fers to purity; in machine tool equipment and accessories it 



