118 PHILIPPINE RESINS, GUMS, AND OILS 



lent to one part of castor oil. These writers state that the 

 soap-making- quality of this oil was tested by the Bureau of 

 Science with gratifying results and that the oil is now being 

 used by at least one firm in Manila in this industry. 

 Balukanag oil has the following chemical constants : 



Specific gravity at 15° C 0.9203 



Specific gravity at 30° G 0.9188 



Butyro refractometer (reading at 30° C.) 60-61 



Iodine value (Hanus) 80.78 



Reichert-Meissl value 7.34 



Saponification number 192.02 



Free fatty acids (oleic) per cent.... 3.98 



Acid value cc. N/10 KOH.... 7.06 



Chisocheton cumingianus is a tree reaching a height of 20 

 meters and a diameter of 45 centimeters. The flowers are fairly 

 numerous, on long inflorescences. The leaves are compound 

 with leaflets about 20 to 25 centimeters in length. The fruit 

 is pear-shaped and when dry is about 8 centimeters in diameter. 

 It contains nuts averaging- 3 centimeters in length and 2.5 centi- 

 meters in width. 



This species is distributed from northern Luzon to Mindanao. 



CHISOCHETON PENTANDRUS (Blanco) Merr. (Fig. 42). Katong- 



MACHIN. 



Local names: Igm (Tayabas) ; kdtong-bakdlau, mnlatumbdga, kdtong- 

 machin (Bataan) ; pamalat'drTgen (Cagayan).- 



KATONG-MACHiN OIL 



Oil extracted from the fruit of this species is used locally as 

 a hair cosmetic. 



Chisocheton pentandrus is a tree reaching a height of 30 

 meters and a diameter of 40 centimeters. The leaves are al- 

 ternate and compound. The leaflets are opposite, pointed at 

 the tip, rounded at the base, and 7 to 14 centimeters in length. 

 The flowers are small and are borne on long-branched inflores- 

 cences. The fruits are round, red, hairy, and about 1.5 centi- 

 meters in diameter. 



This species is distributed throughout the Archipelago. 



Genus XYLOCARPUS 

 XYLOCARPUS MOLUCCENSIS Lam. PlAGAU. 



PIAGAU OIL 



A description and figure of this species and its local names 

 are given in the section on mangrove swamps. 

 Heyne * says that, according to Wijs, the seeds contain 40 to 



* Heyne, K., De Nuttige Planten van Nederlandsch-Indie, Volume 3 

 (1917), page 45. 



