^ 



EUCALYPTUS LONGITOLIA. 



bark of different Encalypts is very variable, as may be noted from experiments, instituted under 

 my directions by Mr. L. Eummel, fresh bark beiag used for tbe purpose, the tannic principle 

 loosing its solubility and also its efficiency to some extent by exsiccation and chemical decom- 

 position. 



