BOTANIC MATERIA MEDICA, 347 
odor, but has a decided taste of chocolate, and 
contains o/ein, stearin, palmitin, laurin, arachin, 
Sormic, acetic, and butyric acids, and some resin. 
Oil of theobroma is largely prepared in Phila- 
delphia from the nuts, which are first soaked in 
hot water and then expressed. This substance 
is extensively used in the preparation of cos- 
metics, and as an adjunct to other remedies in 
medicine in form of ointments and supposi- 
tories. The butter may be readily powdered 
by adding to it a few drops of alcohol, by which 
means it may be easily manipulated. By the 
addition of a few drops of castor oil to the pow- 
der, suppositories are easily made. 
Oleum Tiglii, Croton Oil.—This fixed oil is 
obtained from the seeds of the Croton Tiglium, 
which have been previously deprived of their 
shells and then subjected to pressure. Itmay 
also be separated from the seed by macerating 
with water, or by the action of ether or carbon 
bisulphide, which dissolves the oil, which is then 
subsequently recovered by evaporation. 
The plant and seeds are described under an- 
other head, and bya reference to the Croton | 
Tiglium you will find that its natural order is 
placed in the Euphorbiaceze or Spurge family. 
The seeds yield about 22 per cent. of fixed oil, 
which occurs in the stores as a viscid liquid of 
pale yellow or red-brown color; the yellow col- 
ored oil is said to be imported from India, whilst 
the red oil is expressed from the seeds in Eu- 
rope andin this country. Theodor of the oilis 
feeble and of its own kind, whilst the taste is 
hot, acrid and permanent. According to anal- 
ysis, croton oil contains the glycerides of pa/- 
