TOBACCO. 



593 



yield a pale yellow extract to alcohol, which contains a compound 

 of nicotine and sugar. 



M. M. Henry and Boutron Charlard found in 100 parts of 



Cuba tobacco 8'64 of nicotine. 



Maryland 5'28 



Virginia lO'OO 



He et Vilaine 11-20 



Lot et Garonne 8'20 



quantities from 12 to 19 times more than were obtained by 

 Posselt and Eeimann. " Ure's Dictionary of Arts and Manu- 

 factures." 



The following are the results of a series of experiments made 

 by Messrs. Cooper and Brande, for the purpose of ascertaining 

 the quantity of soluble matter in eight samples of tobacco, of 

 detecting the presence and quantity of sugar contained in them, 

 and the nature and relative proportions of their inorganic con- 

 stituents. An important paper on the state in which Nicotine 

 exists in tobacco, and on the relative proportion of it furnished 

 by different varieties of the * plant, has been furnished by 

 Schlcessing (" Ann. Ch. et Ph. " 3ieme Ser. XIX. 230). 



2 Q 



