360 A COMPENDIUM OF 
scales after being boiled in water. The oil isa 
powerful stimulant, and in large doses danger- 
ous; administered in form of Spiritus Cinna- 
moni and Aqua Cinnamoni. Dose of the oil, 
1 to 5 drops. Does not affect the plane of po- 
larized light to any extent. 
Oleum Copaibz, Copaiva Oil. This vola- 
tile oil is obtained by distilling the Oleo-resin 
with water; it is isomeric with turpentine oil, — 
having a specific gravity of 0.89, colorless or 
with a slightly straw-like tinge, having a strong 
odor and taste of the balsam somewhat intensi- 
fied; it contains no oxygen and is therefore rec- 
ommended as a better preservative for potas- 
sium than naptha. It boils at 475° and solidi- 
fies and crystallizes at 15° below zero. Absorbs 
the vapors of hydrochloric acid and forms crys- 
tals of artificial camphor, ‘The medical effects 
on the human being are like those of the bal- 
sam (Oleo-resin), It is administered on sugar 
in form of an emulsion, or as an addition to other 
temedies. The dose is 10 or 15 drops. (0.6 to 
°9 gram). It is sometimes applied as a coun- 
ter-irritant, and preferred by some practition- 
ers to the turpentine spirits. 
Oleum Coriandri, Coriander Oil. Distilled 
from the fruit of the Coriandum Sativum.— 
Natural order Umbellifere. When first pre- 
pared colorless, but on being kept for some 
time it assumes a deep yellow color. It has a 
specific gravity of about 0.87, The fruit is not 
very rich in oil, for one pound only yields about 
a fluid drachm. Like the other ‘oils chiefly 
made up of hydrocarbon; not much used. 
