100 ON THE OLEO-RESIN OF CANARIUM MUELLERI, ETC. 



On the other hand, when Elemi is treated with alcohol a 

 large quantity of blade-like crystals are seen under the micro- 

 scope ; these crystals are present in large quantities. 



From these and other comparative tests, it appears that this 

 oleo-resin and Elemi are neither identical nor allied. Besides 

 Fliickiger's paper already quoted, those interested in the chemis- 

 try of Elemi are referred to the following : — 



1. Contribution to the history of Elemi, Eugen Buri., 

 Pluinit. Jonrn. [3] VII., 157, Absts. from Xciw'.s Rcpert, F. Phar- 

 iiiarir XXV., 193. 



2. Elemic acid Contribution to the Chemistry of Elemi, 

 Eugen Buri., Phann. Juuni. [A] , VIII., 601. 



3. Article Canarium, cummiuw in Vol. I. of Bentley and 

 Trimen's " Medicinal Plants," which is an admirable resume of 

 the subject. 



CONCLUSIONS. 



1. The exudation of Canaiiwn MueUeri consists of a solution 

 of an amorphous resin in a volatile oil, and is therefore an oleo- 

 resin. 



2. It possesses no particular affinities to Manila Elemi. 

 Composition of Oleo-resin of Canaiiuin MueUeri : — 



Resin (soluble in alcohol and ether . . 73.33 

 Volatile Oil 26.67 



100.00 



I desire to express my obligations to my assistant, Mr. H. G. 

 Smith, for help in the chemical portion of this investigation. 



* " On the Chemistry of Elemi," by Prof. Fliickiger, Pharm. Journ. TS] , 

 V. 142. 



