THE PHILIPPINE 



Journal of Science 



A. General Science 



Vol. IV MAECH, 1909 No. 



PHILIPPINE TERPENES AND ESSENTIAL OILS, III. 



By RAYjroND F. Bacon. 



[From the Chemical Laboratory, Bureau of Science.) 



Ill endeavoring b}^ a general snrve^y to ascertain the economic pos- 

 sibilities of the Philippines in tlie field of terpenes and essential oils, I 

 have found it convenient to plan the work in accord with the available 

 material. This has made it necessary to leave man}' interesting oils 

 when their study has been only well started, as the raw material is often 

 available but once a year. The important factors of yield per hectare, 

 the best time for harvesting, the effects of various soils, etc., must be 

 ascertained on some of the perfume plants by slow experiments in the 

 laboratory garden before reliable statements can be made as to the 

 economic possibilities of these plants in the Philippines. In the present 

 paper I present under separate subheads, the results obtained during the 

 past year in this field. In all eases where the plant offers commercial 

 promise the work is being continued as fast as new material is available 



JIAS'ILA ELEMI. 

 INTRODUCTION. 



A. M. Clover ^ has published the results of the examinations of tne 

 terpene oils from twenty-one authentic samples of Manila elemi and he 

 thus was able to isolate pure specimens of f/-limonene, li-phellandrene, 

 dipentene, terpinene, and terpinolene. I have continued this investiga- 

 tion and have collected over one hundred specimens of elemi from 



. '77(ts Journal, Sec. A. (1007), 2, 1. 

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