11 



more apparent each year. In order to bring information of this 

 character to the attention of the reading public, a series of press 

 bulletins was inaugurated in 1912. Up to the present time 86 

 independent numbers of this popular publication have been 

 issued. Ihe industrial articles that indicate the scope of the 

 commercial utilization of Philippine economic products have been 

 on the following subjects: 



The financial loss occasioned by harvesting unripe sugar cane, 

 the methods of clarifying sugar cane juice, and various other 

 leaflets on the melting, reboiling, and manufacture of, and the 

 prevention of economic waste in, both nipa and cane sugar; 

 Philippine alcohol and beverages, and the value of the former 

 as a motor fuel; Philippine dyes and tanning and paper-pulp 

 materials; copra and other coconut products; resins, terpenes, 

 perfumes, edible nuts, and vegetable oils other than coconut oil ; 

 medicinal plants; the castor oil plant (tangan-tangan) in the 

 Philippine Islands; tikitiki extract; papaya gum; starch; rub- 

 ber; kapok; rattan, bast fibers, and other Philippine tie mate- 

 rials ; how to prepare coconut butter ; Philippine flour substitutes ; 

 the methods of preservation, drying, or otherwise utilizing Phil- 

 ippine food products ; the nutritive value of Philippine vegetables ; 

 the milk supply in the Philippine Islands; Philippine substitute 

 for cork; improvement of the tanning and leather industry in 

 the Philippine Islands; shark-liver oil; cigar molds and their 

 prevention; birds in their economic relation to man, agricul- 

 ture, and forestry; bat guano; silk; honey; coconut insects, 

 the cigarette beetle, and other insects injurious to agricultural 

 products; sponges, pearls, commercial marine shells, and other 

 fishery resources and products of the various parts of the Phil- 

 ippine Islands; rabies; "carriers" and cholera control; diseases 

 of man and other animals ; water surveys ; soil surveys ; lime ; the 

 manufacture of roofing tiles and of vitrified and other clay 

 products; gold, silver, lead, copper, and iron ore deposits in 

 various parts of the Philippine Islands and other metallic mineral 

 resources ; petroleum, coal, gas, and asphalt resources of various 

 parts of the Philippine Islands ; and Philippine fuels. 



A great deal of the assistance that we are able to-day to 

 give to industries of various sorts depends on scientific work of 

 a specialized character that was accomplished in preceding years. 

 Certain problems require years for completion, and economic in- 

 vestigations must anticipate commercial and industrial develop- 

 ment. For this reason much of the work of the Bureau of 

 Science becomes most useful at a later date. For example, the 

 work of the Bureau of Science on paper pulp completed ten 



