to 28; with linseed, 32 to 21; with the
olive, 32 to 16.

The leaves and stems of this plant are rejected by cattle; but the
oil-cake, which always contains a considerable portion of the oil,
forms a nutritive food, of which they are very fond. The oil expressed
without heat is transparent, of a golden yellow color, inodorous,
rather fatter than the oil of rape or olives, and of a soft,
agreeable, nutty taste. It is fit to be employed in the preparation of
food, in salads, and for all the purposes of the best and mildest
fixed oils. It burns with a brilliant, reddish-white flame, and leaves
no residue. It is little liable to become rancid, and is completely
decolorised by animal charcoal.

The oil of the seeds of this plant, now extensively cultivated in
France, will yield, according to the observations of Braconnet, a
solid soap, similar to that made from olive oil. Boussingault obtained
from the oil a solid, as well as a fluid acid. The solid one is
probably palmic acid, it fuses at exactly 140 degrees of Fahrenheit.
The fluid acid in its properties resembles the oleic acid discovered
by Chevreul, and seems to dry easily.

The following is the composition of each, as determined by his
analysis:--

Solid acid. Fluid acid.
Carbon 74.2 76.0
Hydrogen 12.0 11.0
Oxygen 13.8 13.0
------ ------
100. 100.

COCUM OIL, or butter, is obtained from the seeds of a kind of
mangosteen (_Garcinia purpurea_), and used in various parts of India
to adulterate ghee or butter. It is said to be exported to England for
the purpose of mixing with bears' grease in the manufacture of
pomatum. It is a white, or pale greenish yellow, solid oil, brittle,
or rather friable, having a faint but not unpleasant smell, melting at
about 95 degrees, and when cooled after fusion remaining liquid to 75
degrees.

An excellent solid oil, of a bright green color, is obtained from
Bombay, having a consistence intermediate between that of tallow and
wax, fusible at about 95 degrees, and easily bleached; it has a
peculiar and somewhat aromatic odor. There is some uncertainty as to
the plant from which it is obtained. It was referred to the _Salvadora
persica_, and to the _Vernonia Anthelminticea_, a plant common in
Guzerat and the Concan Ghats.

A pale yellow clear oil is obtained from the seed of