!5o ELCALYPTUS. 



Inhalant, Eucalyptus, No. 7 of P., D. & Co. 's series of 

 inhalants; Oil Eucalyptus, i fluidrachm; Inhalant 

 No. i (neutral oil), I fluidounce; used with advan- 

 tage in foetid brochitis, diphtheria, etc. 



Lozenges, Eucalyptus, containing: Ext. Eucalyptus, 

 true, 3 grs. ; Ext. Licorice, i gr. 



Pills, Eucalyptus Compound, i 5-8 gr.; Ext. Eucalyptus, 

 i gr.; Ext. Canadian Hemp, y 2 gr. ; Sanguinarin, 

 1-8 gr. 



Pills, Eucalyptus Extract, 2 grs. 



Pills, Fever and Ague, 2 grs.; Ext. Eucalyptus, '4 gr.; 

 Chinoidin, i gr. ; Iron Ferrocyanide, ]/-> gr.; Powd. 

 Capsicum, % gr. ; Arsenious acid, 1-200 gr. 



THE CHEMISTRY OF EUCALYPTUS. 



Hartzer"' (1870) obtained from the leaves tannin, eery lie or an allied 

 alcohol, a crystallizable fatty acid the sodium salt of which is soluble in 

 ether and three resins, one of which has acid properties, and yields with 

 sulphuric acid a carmine-colored copulated acid, becoming violet with 

 ether. 



E. S. Waynet (1870) likewise isolated an acid resin, which he found 

 to be crystalizable, and to give a brown-red reaction with ferric chloride. 

 The most important constituent, however, is the volatile oil, of which the 

 leaves yield about 6 per cent. 



The United States Pharmacopteia recognizes the oil obtained from 

 Eucalyptus globulus, Eucalyptus amagdalina and some other species of 

 Eucalyptus.]: 



These volatile oils are colorless or pale yellow, thin liquids, becoming 

 thicker and somewhat darker by age. They are neutral to test-paper, 

 are highly and more or less pungently aromatic in odor and taste, that of 

 Eucalyptus globulus being camphoraceous, that of Eucalyplus aniygda- 

 lina somewhat resembling peppermint, while others have a more terebin- 

 thinate or lemon-like odor, and that of Eucalyptus persicifolia, or peach 

 gum, like oil of bitter almonds, with which it agrees in containing hydro- 

 cyanic acid. The specific gravity of these oils varies between .88 and .94, 

 and their boiling points between about 130 and 200 C. (266 and 392 F.) 



The dextrogyre oil of Eucalyptus globulus was examined by Cloez 

 (1870) and by Faust and Homeyer (1874). Cloez regarded the oil as be- 

 ing chiefly composed of Eucalyptol, Ci2H2oQ, boiling at 178 C. (3524 F.) 

 and yielding with phosphoric anhydride two compounds. C 12 H l8 , of 



* American Journal of Pharmacy, 1876, p. 329. 

 t American Journal of Pharmacy, 1876, p. 23. 



j This error I have referred to, Eucalyptus gohulus oil containing eucalyptol and 

 Eucalyptus amygdalina, Phellandrene. 



