54 THE BUREAU OF SCIENCE 



quality produced in the Bureau of Science experimental kiln and 

 instruction as to how proper kilns can be made and operated. 

 9. Harmful effects of a deficiency or excess of lime in the juices. 

 10. Demonstration to show that a dilute juice will produce a better sugar 

 if mixed in proper quantities with a more concentrated juice and 

 that a rapid rate of evaporation and rapid concentration of a dilute 

 juice prevents the inversion of sugar and results in a better product. 



No entomologist has been on duty in this institution for 

 several months, but the need is exceedingly apparent. On Oc- 

 tober 18, 1915, I received a request from the Assistant Director 

 of Health asking for the identification of Surigao specimens of 

 bed bugs from a bed, lice from the hair of a woman's head, 

 ticks from a hog, and flies from market refuse. I have just 

 received a letter which reports a plague of centipedes on an 

 island situated off the coast of Pangasinan between the munic- 

 ipality of Anda and that of Alaminos, which is "causing much 

 pain and inconvenience" to the inhabitants. The report requests 

 recommendation as to the best method of exterminating or 

 reducing the number of centipedes. Whenever possible, work of 

 this kind is performed by the Bureau of Science, but it is fre- 

 <iuently accomplished by the generous assistance of a former em- 

 ployee now not connected with the Government. These are only 

 two of many requests and indicate a large amount of experimen- 

 tal study and work in preparing information necessary to assist 

 the Bureaus of Health, Forestry, Agriculture, etc. ; in the study 

 of poisonous insects and those responsible for the spread of 

 disease; those injurious to timber trees, agricultural plants, etc.; 

 and injurious insects that are held in check by birds, etc. 

 Also entomologists will be of great assistance to the work of 

 the sanitary commissions that are now in operation. The 

 employment of at least two during 1916 is recommended. 



The desirability of extending the silkworm industry within the 

 Archipelago becomes more apparent each year. However, there 

 seems to be a hiatus between the Bureau of Science and the people 

 who could profit by the silk industry. The Bureau of Science has 

 the information with regard to silk culture, silkworm eggs, and 

 the mulberry trees, but no adequate method of inducing the 

 people in the provinces to take up the industry. Demonstrators, 

 preferably Filipinos, who should have Government support in 

 establishing small silk farms in favorable localities so that the 

 people could actually see the results that can be secured, should 

 be used to induce the people of these Islands to engage in the 

 industry. 



