249 Experiments on the Sanguinaria canadensis. 



(2.) The reddish brown residuum left after the action of 

 cold water, was then digested in dilute alcohol, as long as that 

 fluid acquired any color from it. The clear solution thus 

 obtained, was of a beautiful red color ; the alcohol was dis- 

 tilled off, the liquid became turbid, and when evaporated 

 afforded a residuum weighing 2.1 grains. It contained resin, 

 a trace of starch, by solution of iodine, and extractive matter 

 probably altered. 



(3.) The insoluble residuum of process (2.) was boiled in a 

 large quantity of water ; the insoluble portion separated by 

 filtration, and well washed : it consisted of ligneous fibre prin- 

 cipally, and when dried at 212°, weighed 102 grains. 



(4.) The fluid (3.) was concentrated, and became darker 

 colored: evaporated to dryness, a brown matter was obtained, 

 which presented the characteristics of starch. Dried at 212°, 

 it weighed 75 grains. 



(5.) Two hundred grains of the dried root, when consumed 

 in a crucible, left five grains of earthy and saline matter; in 

 which carbonate of potash, carbonate of soda, carbonate and 

 sulphate of lime, were detected: indications also of magnesia 

 were observed. 



The results of this analysis then are : 



Grains. 

 Matters soluble in cold water, (gum, extractive 



and saline) 26. 



Matters soluble in dilute alcohol, (resino-extrac- 



tive) 2.1 



Matters soluble in boiling water, (starch, &c.) 75. 



Insoluble residue, 100. 



203.1 



