EUTACEJE 469
had a higher specific gravity (0
- 8839), and might, therefore, be expected
to contain more phenols.
Jensen's results were as follows:—
Per Cent.
Hydrocarbons (myrcene) 35
Phenols 16
Phenol ethers ........... 15
Alcohols ............ 15
Esters calculated as linalyl acetate ....... 4
Aldehydes and ketones 4
Sesquiterpenes, etc.. ......... 11
J. C. Umneyl has recently received from Grahamstown a sample
of small leaves stated to be those of Barosma scoparia.
An examination of the leaves showed that they correspond very
closely with the leaves of Barosma venusta, which has already appeared
in commerce. The leaves are very small, about £ in. broad, and a little
longer, elliptical, obtuse in a few cases, but mostly obovate. They
certainly do not belong to the typical form of Barosma scoparia.
The essential oil possesses a characteristic, decidedly pleasant odour,
somewhat similar to Barosma serratifolia, and the oil shows no separation
of diosphenol. It has this feature in common with the oil of Barosma
venusta and also Barosma serratifolia, and for that reason may have less
medicinal value than the official buchu, Barosma betulina.
WEST INDIAN SANDALWOOD OIL.This oil is not a true sandalwood oil, the misnomer having largely
contributed to the substitution of this oil for the genuine sandalwood oil,,
and to its use as an adulterant of the latter.
It is distilled from the wood of Amyris balsamifera, which yields from
1*5 to 4 per cent, of oil. It is a thick, viscid yellow oil of pleasant odour
recalling that of cedarwood oil, with a secondary odour of true sandal-
wood oil, and has the following characters :—
Specific gravity 0-948 to 0-972
Optical rotation + 19° „ + 30°
Alcohols as G 15 H 26 O 30 to 55 per cent.
It is soluble in an equal volume of 90 per cent, alcohol.
It contains an alcoholic body which has been named amyrol, of the
formula C 16 H2fiO, or, according to Van Soden and Kojahn,
2
a mixture of
two alcohols, having the following characters:—
- Formula C16H26O C^H^O
Specific gravity about 0'987 —
Optical rotation „ + 36° 0°
Boiling-point 299° below 299°
The oil also contains a lactone, amyrolin, of the formula CuH 120 3r
melting at 117°, d-cadinene, and /?-caryophyllene.
- Formula C16H26O C^H^O
ANGOSTURA BARK OIL.
The bark of Galipea cusparia (Cusparia trifoliata) yields between 1
and 2 per cent, of essential oil. The tree is found in abundance on the
mountains in Venezuela, and it is especially plentiful in the country round
(^1) P. atid E.O.R. (1914), 373. « Pharm. Zeit.,46 (1900), 229.