OIL OF EUCALYPTUS 495 



The leaves of Eucalyptus globulus Labillardiere (nat. 

 ord. Myrtacese), collected from the older parts of the tree. 



Description. — Petiolate, lanceolately scythe-shaped ; from 

 15 to 30 cQi. long ; rounded below, tapering above ; entire, 

 leathery, grayish-green, glandular, feather- veined between 

 the midrib and marginal veins ; odor strongly camphorace- 

 ous ; taste pungently aromatic and somewhat cooling, bitter 

 and astringent. 



Constituents. — 1, a volatile oil (see below); 2, a crystalliz- 

 able resin; 3, a crystallizable, fatty acid ; 4, cerylic alcohol. 



Dose.—R. & d, 5 ii.-iii. (60.-90.); D., 3 ss.-ii (2.-8.). 



PREPARAT19N. 

 Extractum Eucalypti Fluidum. Fluid Extract of Eucalyptus. 



(U. S. P.) 

 Made by maceration, percolation and evaporation,- so that .1 Co, = 

 1 Gm. of the crude drug. 



Dose. — Same as for eucalyptus. 



Oleum Eucalyptl Oil of Eucalyptus. (U. S. & B. P.) 



A volatile oil distilled from the fresh leaves of Eucalyp- 

 tus globulus Labillardiere, Eucalyptus oleosa F. V. Mueller, 

 and some other species of Eucalyptus (nat. ord. Myrtacese). 



Properties. — A colorless or faintly-yellowish liquid, 

 having a characteristic, aromatic, somewhat camphoraceous 

 odor, and a pungent, spicy, and cooling taste. Spec. gr. 

 0.915 to 0.925. Soluble in all proportions in alcohol, carbon 

 disulphide, or glacial acetic acid. 



Constituents. — 1, a volatile oil,, eucalyptol or cineol 

 (CioHigO), 70 per cent. ; 2, eucalyptene (CioHie) ; 3, cymene 

 (C^oHJ. 



Incompatihles. — Alkalies, mineral acids, and metallic salts. 



Dose.—R., 3i.-ii. (4.-8.); D., Ulii.-x. (.12-.6). 



Eucalyptol. Eucalyptol. G^J3.^,0. (U. S. P.) 

 A neutral body obtained from the volatile oil of Eucalyp- 



