208 PHILIPPINE RESINS, GUMS, AND OILS 
kabigau (Camarines, Mindoro); kamiulau (Iloko) ; kamuntar (Bisaya) ;* 
kamiyau (Ilocos Norte and Sur, Abra); kapitan (Iloko) ; kolobot (Taga- 
log) ; limén-karabdu (Zamboanga); makatbdé (Zambales); peres (Panga- 
sinan). 
KABUYAU OIL 
Schimmel * states that the oil of this species has an odor 
resembling that of bergamot. According to Brooks, the leaves 
of the Philippine plant when steam-distilled yield an oil resem- 
bling in odor the oil distilled from the leaves of the pomelo, 
Citrus decumana Murr. Although the oil is very fragrant, the 
yield (0.08 per cent) is extremely small. The constants of the 
oil are as follows: Specific gravity, Sy = 0.9150 N ~ =1.4650; 
A = — —10.50°; saponification number, 50.2. 
Citrus hystrix is a small tree armed with small spines. The 
leaves are variable, but average 10 to 12 centimeters in length. 
The flowers are white and about a centimeter wide. The fruits 
are about 10 centimeters in diameter. 
This species is common and widely distributed in forests 
throughout the Philippines. 
CITRUS MICRANTHA var. MICROCARPA Wester. (Fig. 70). SAMUYAU. 
SAMUYAU OIL 
The rind of this species yields a clear, almost colorless oil 
which is very fragrant. It should be useful as a perfumery 
oil. 
The crushed fruits or samtyau are used by women in Cebu 
for cleansing the hair, or are mixed with Gogo (pounded stems 
of Entada phaseoloides) which serves as a shampoo. The 
crushed fruit is also added to coconut oil, to give it fragrance 
when applied to the hair. 
The oil obtained by steam-distilling the crushed peels had an 
orange-like odor and the following constants: 
a 
Specific <eravat yes 2 te Ge et a 28.5°=' O8670 
Retractive in d exces eee oe 2 oe ete ee net a 25° WANS: 
Onptical@rotationiy. eee eye a = —1.150 
(100 mm. tube) 

* Schimmel, Semi-annual report (1901). 
+ Brooks, B. T., New Philippine essential oils. Philippine Journal of 
Science, Section A, Volume 6 (1911), page 349. 
