156 PHILIPPINE RESINS, GUMS, AND OILS 
(Pangasinan) ; bitong (Bataan); bit-tdog (Cagayan, Camiguin, Isabeened 
bittog (Bataan) ; butdlau (Batangas) ; dagkdlan (Isabela) ; dangkdlan (Ba- 
taan, Tayabas, Camarines, Albay, Mindoro, Masbate, Negros, Capiz, Lanao, 
Zamboanga, Burias Island, Butuan, Cotabato, Palawan); dangkdan (Da- 
vao) ; palomaria (Mindoro, Tayabas, Bataan, Zambales, Pangasinan, Nueva 
Ecija, Cagayan, Manila, Cebu, Zamboanga) ; palomaria de la playa (Bataan, 
Laguna, Camarines, Mindoro, Misamis, Zamboanga, Basilan) ; pamittadgen 
(Palaui Island); tambo-tambo (Jolo); vutdlau (Batanes). 
BITAOG OIL 
The seeds yield bitaog oil which is greenish-yellow in color 
and which in some districts is used as an illuminant. Each tree 
yields several bushels of nuts per year. According to Richmond 
and del Rosario * 70 to 75 per cent of this oil can be extracted‘ 
from the kernels. They say that the oil is called domba and in 
Indo-English, improperly, laurel-nut oil. Concerning its uses 
they write: 
* *  * The oil is not serviceable as an edible fat, since it contains a 
poisonous resin to which the color and odor are due. On the other hand, 
it finds application as a natural remedy in skin diseases and rheumatism, 
and it is used for that purpose in many districts of India; it is exported in 
considerable amounts from Travancore, particularly from Burma, and 
under the name of “udilodl’’ it has been experimentated with in Europe 
for some time in the treatment of rheumatism. 
The oil is said to be excellent for making soap. 
G. Fenler + investigated the oil obtained from the nuts of « 
Calophyllum inophyllum and states that it is greenish-yellow in 
color, has a bitter, pungent taste, and is soluble in all proportions 
in the usual solvents, but is insoluble in absolute alcohol. An 
examination of the oil gave the following constants: 
Specific oravity at 15° C22 oe ee eee 0.942 
Reichert-Meiss] numbet:.2—)-— = al € 
Acid walle -in.:.-:.c21---22) 3 ee ee 28.45 
Saponification value’: 22 eee 196 
Todine. -Valtie ya: :sc%2:2.5:5 ee ee 92.8 
When heated with caustic soda the oil yields a greenish resin 
of semiliquid consistency, soluble in alcohol. The fatty acids 
consist largely of palmitic, oleic, and stearic acid. 
Crevost ¢ states that Lefeuvre, by neutralizing the oil of Calo- 
phyllum inophyllum with caustic potash and separating the soaps 

* Richmond, G. F., and Rosario, M. V. del, Commercial utilization of 
some Philippine oil-bearing seeds: preliminary paper. Philippine Journal 
of Science, Section A, Volume 2 (1907), page 444. 
+ Chemiker Zeitschrift, Volume 29 (1905), page 15. r 
+ Crevost, Ch., Bulletin Economique de l’Indochine, New Series, Volume 
8 (1906), page 394. 
