THIRTEENTH ANNUAL REPORT 



25 



Nature of material. 



Rocks and minerals 



Soils, fertilizers, cements, and clays- 



Metals and alloys 



Road materials, stone, gravel, sand, 



and concrete 



Waters 



Calorimeter determinations of fuels. 



Boiler tests of coal 



Standardizations of weights and 



measures (sets, except assorted).. 



Coal analyses 



Miscellaneous b 



Paints 



19(1»-10 ; 1910-11 1!)11-I'> 



3,a42 

 24 



82 



248 



Total. 



I 



3,696 



25 



3,738 



46 



400 



164 



29 



10 



1,066 

 154 



46 



,636 



36 



248 



146 



9 



2 



990 



20 



248 



1912-13 



12 



9,617 



45 



130 



197 



31 



1,127 

 58 

 91 

 46 



July 1 to 



Dec. 31, 



1913. 



3 



5,137 

 14 



136 



126 



7 



Calendar 

 year 1914. 



6.884 

 51 



132 



208 



7 



5,672 10.381 



11,354 



a 1,321 



3 



60 



33 



•-■6,840 



1,300 

 22 

 88 

 41 



8,733 



a Units. 



^ Work classified under Miscellaneous in 1910 is largely segregated in the following periods. 



<^ Six months only. 



This shows a reduction in the number of analyses of waters 

 performed in the laboratory due to the inauguration of field 

 examinations and in the number of cements on account of the 

 limited funds available to the Government for public works. 



The routine work of this one division was done at the request 

 of individuals representing private or corporate interests and 

 of officials in the following various departments of the Govern- 

 ment : Bureaus of Agriculture, Constabulary, Customs, Educa- 

 tion, Forestry, Health, Quarantine Service, Lands, Prisons, Public 

 Works, Supply, and Science; the city of Manila; Provinces; 

 municipalities; and the United States Army and Navy. It will 

 be seen how generally the Bureau of Science is utilized. As 

 indicated under the heading Committee on Standardization of 

 Supplies, the conditions in the Philippines make it essential to do 

 more or less research work in connection with almost every 

 request. Results obtained prove conclusively the great need of 

 standard requirements for all classes of material and the advis- 

 ability of improving local products. For many of the materials 

 such as crayon, blackboards, roofing, sensitized and cigarette 

 paper, automobile tires, and tool steel sent to us for standard- 

 ization no specifications were available. However, we devised 

 tests, which in most instances were sufficiently eff'ective to show 

 the real or relative value and usefulness of the materials. 



RESEARCH WORK 



Specific investigations in various stages of completion are as 

 follows : 



Paints. — The systematic study of the efficiency and value of 



