448 



VEGETABLE SUBSTANCES. 



This substance comes to us from the East Indies ; 

 7,0191bs. were imported for home consumption in 

 1830. Its price is from l to 22 per cwt., ex- 

 clusive of duty, which is 4s. per cwt. 



Several other gum-resins are known which are used 

 only in medicine ; the enumeration of them is there- 

 fore not within our province. 



Although many trees thus yield compound con- 

 crete juices, it is seldom that from one tree both gum 

 and resin are extracted as separate products. Ac- 

 cording to professor Pallas the larch-tree in Russia 

 possesses this singular property ; on wounding its 



Larch. 



