. THE PHILIPPINE 



Journal of Science 



A. Chemical and Geological Sciences 

 AND THE Industries 



Vol. VI JANUARY, 1911 No. 1 



PHILIPPINE FIREWOOD. 



By Alvin J. Cox. 



(From the Chemical Laboratory, Bureau of Science, Manila, P. I.) 



Very little has been done in a comparative study of the chemical and 

 physical properties of Philippine woods. Many of them are quite 

 different from those of tlie United States and other countries, where a 

 great deal of work has been carried on, and without at least some prelimi- 

 nary data it is difficult to make any comparison. Much information may 

 be gained from experience among those who have handled certain classes 

 of wood for certain purposes. F. W. Foxworthy,^ H. N. AVliitford,^ 

 E. Gardner,^ W. M. Maule* and others have published articles dealing 

 with Philippine woods, and in order to connect these articles with the 

 chemical technology of woods of other countries and to aid in the asso- 

 ciation of the fuel value of Philippine woods with well known ones, and 

 perhaps their use in the charcoal industry, I have made the following 

 investigation. 



The greater proportion of the firewood of the Islands is cut from the 



-trees which compose the thick mangrove swamps of the coast. Doctor 



Whitford,^ of the Bureau of Forestry, has estimated the area of these 



^This Journal, Sec. C (1907), 2, 351; Ibid. (1909), 4, 409. 



'Bull. P. I. Bur. Forestry (1907), No. 7. 



'Log. cit. (1907), No. 4. 



*The Charcoal Industry Loc. cit. (1906), No. 2. 



"Forests of the Philippines, Bull. P. I. Bur. Forestry (1911), No. 10, p. 17. 



