DIPTEROCARPEA, — 197 
4 as an incense, and for making varnishes. It is obtained by 
‘ cutting notches in the tree, when it exudes and gradually 
hardens. Specimens differ much in colour, fragrance and 
density ; some being of a light greenish colour, dense, homo- 
geneous and vitreous on fracture, whilst others are amber- 
coloured, and vesicular. These differences .apparently arise 
from the mode of collection; and the age of the trees pro- 
ducing them. It burns with a clear, steady light, giving off a 
pleasant smell, but very little smoke, With the aid of heat, 
and the addition of a small portion of camphor, it is soluble 
in spirit. Under the influence of gentle heat it combines with 
wax and oil, and forms an excellent resinous ointment. (Dr. G. 
Bidie in Pharmacopeia of India.) Vateria seeds yielda 
vegetable butter, known as the Piney tallow of Canara, or 
_ Malabar; this fat has a considerable reputation as a local . 
application in chronic rheumatism, and might be used asa 
basis for ointments where increased consistency is required. 
3 It closely resembles the solid fats of Garcinia and Bassia, and 
like them consists chiefly of solid fatty acids. It would, no 
doubt, be valuable in the preparation of nitrate of mercury 
ointment. (See article on Gurcinia indica.) 
Chemical composition.—The seeds have been examined by 
*M. M. Héhnel and Wolfbauer, who found that when air dried 
they afforded 49-2 per cent. of a greenish-yellow solid fat, 
which bleaches rapidly on exposure to light and has a peculiar 
agreeable balsamic odour. This fat rapidly saponifies, and 
consists of a mixture of fatty acids melting at 56°-6 and 
solidifying at 54°8 C.. The mixture contains oleic acid, and 
60 per cent. of a solid fatty acid melting at 63°8. (Chem. 
Centr. ; Journ. de Pharm, et de Chim. 3 Journ, Chem, Soe., 1886.) 
DRYOBALANOPS AROMATICA, Giirtn. 
 Fig.—Hook. Journ. Bot., 1852, t. 7; Hayne wit., t. 
4 Borneo Camphor (Eng.). raed 
-Hab.— Sumatra, Borneo. 
