222 



ROSACES 



216. OLEUM ROS.E. OIL OF ROSE 



ATTAR OP ROSES 

 A volatile oil distilled from the fresh flowers of Ro'sa damasce'na Miller. 



SOURCE. District of Kisanlik, in southern slope of the Balkans. 



DESCRIPTION. A pale yellow liquid having a specific gravity of 0.87, an agreeable 

 rose odor, and sweetish taste. It solidifies between 16 and 2iC. into a 

 transparent solid, containing numerous slender, iridescent crystals of the 

 stearopten, which float on the surface when the solid is melted, as by the heat 

 of the hand. 



CONSTITUENTS. It consists of two parts, one of which is fragrant and the other 

 comparatively inodorous. The fragrant principles are mainly geraniol and 

 citronellol; the other a white crystalline stearopten, Ci6H 3 4, melting at 36.5* 

 to 38C. Used as a perfume in ointments, pomades, etc. 



FIG. 116. Rubus vittosus Branch and fruit. 



217. RUBUS, N.F. RUBUS 

 BLACKBERRY ROOT 



Thei dried bark of the rhizome of Ru'bus villo'sus Aiton, Rubus Nigrobaccus 

 Bailey, and Rubus cuneifolius Pursh. 



DESCRIPTION OF DRUG. In thin, tough, pliable bands i to 2 mm. (J 5 to K2 

 in.) thick, having a blackish-gray outer surface, longitudinally wrinkled, and 



