BOTANIC MATERIA MEDICA, 369 
Oleum Rosz, Rose Oil. Rose Attar, or Otto, 
Distilled from the flowers of the Rose Damas- 
cenez.—Natural order Rosacez, or Rosez, 
Most of the oil is obtained from the rose farms 
of Adrianople, in Turkey in Europe, Broussa 
and Uslak, Turkey in Asia. The oil is also 
prepared in the lower countries of the Balkan 
mountains, between Selimno and Carloya, and 
as far northas Bulgaria. According to authority 
it requires as many as two thousand roses to © 
yield one drachm of oil. The rose is also 
grown in India for the purpose of obtaining the 
Attar; whilst at Grasse, France, the flowers are 
cultivated for the perfume alone, and the much 
esteemed odor is obtained by macerating the 
flower in oil, or some fat free from smell. The 
Oil of Rose is of a pale straw color, having a 
specific gravity of 0.86 to o.89, with the prop- 
erty of congealing at a temperature of 59° to 
60°, forming thin, iridescent crystals of ste- 
ropten, or steroptene, a substance which is de- 
void of the odorous properties of the oil. The 
other constituent is an oxygenated hydrocar- 
bon, termed Lleoptene, which is the true odor- 
iferous principle. The oil is rarely found en- 
tirely free from adulterants, and it is said to be 
systematically doctored with rose geranium oil 
and the volatile oil of ginger grass, Andropogon- 
Schenanthus. The Oil of Rose is used only as 
aperfume. For further account, see Dispensa- 
tory. 
Olean Rosmarini, Rosemary Oil. Distilled 
from the leaves and flowering tops of the Ros- 
marinus Officinalis.—Natural order, Labiate, 
This volatile oil is colorless, and remains so un- 
