CAMPHOR A 197 



176 a. OLEUM LAURI. LAUREL OIL. A green, granular, semi-solid of the con- 

 sistence of butter. It consists mainly of laurostearin, "but contains a small 

 quantity of volatile oil which makes it a very aromatic base for liniments 

 and ointments. 



177. UMBELLULARIA CALIFORNICA NuttaU. CALIFORNIA LAUREL. (Leaves.) 

 They contain a volatile oil which seems to be a strong local anaesthetic, 

 used in neuralgic headache, cerebro-spinal meningitis, intestinal colic, and 

 atonic dyspepsia. Dose: 15 to 30 gr. (i to 2 Gm.). 



178. C AMPHORA. CAMPHOR 



GUM CAMPHOR 



A ketone obtained from Cinnamo'mum cam'phora Nees et Ebermaier, and 

 purified by sublimation. It is dextrogyrate. 



BOTANICAL CHARACTERISTICS. A large and handsome tree. Leaves evergreen, 

 shining, alternate, ovate-lanceolate. Flowers small, perfect, in corymbose 

 panicles; anthers 4-celled, opening by terminal pores. 



FIG. 99. Cinnamomum camphora Branch and flower. 



SOURCE. The camphor tree grows in Japan and China, especially in the 

 island of Formosa. This island alone furnishes half of the total 



