EUCALYPTUS DOKATOXYION. 



The chemical analysis of the leaves (by Mr. Eummel under the author's direction) gave the 

 foUowing results : — 



I. From lead-precipitate, insoluble in diluted acetic acid, 



Eucalypto-tannic acid, not soluble in ether. 

 II. From lead-precipitate, soluble in diluted acetic acid, 

 Bucalyptoic acid, soluble in ether, 

 Fruitsugar, soluble in alcohol but not in ether, 

 Gum, soluble in water, but neither in alcohol nor ether. 

 III. From aqueous solution, not precipitable by subacetate of lead, 

 Eucalyptin, soluble in ether, 

 Fruitsugar, 

 Gum. 

 The percentage of these substances in dried leaves proved to be as follows : — 

 Eucalypto-tannic acid ... ... ... 7*01 



Eucalyptoic acid 



Eucalyptin ... 

 Fruitsugar ... 

 Gum 



•20 

 •22 

 5-41 



7-64 



It will thus be observed, that unlike in leaves of E. rostrata, gallic .acid is absent in those of 

 E. Doratoxylon, that the percentage of Eucalypto-tannin and gum is greater, but that of fruitsugar 

 less. 



