Sanguinaria Canadensis. 
33 
solution. I was unable to crystallize the sulphate, owing to 
the small quantity upon which I operated. 
Experiment 2d. §vi of the finely powdered root were di- 
gested in §xii of alcohol: the tincture at the expiration of 
ten days was filtered off, to which were added f. giiss. of aq. 
ammon., the mixture was then poured into a vessel contain- 
ing two pints of distilled water, when a brown matter sub- 
sided, which was collected upon a filter and carefully wash- 
ed with a small quantity of distilled water, and the colouring 
matter removed by means of purified charcoal. It was then 
treated with boiling alcohol, which dissolved the sanguina- 
rina and by cautious vaporization, the latter was obtained in 
a state approaching to whiteness. By exposure to atmosphe- 
ric air it changed to a light yellow colour. 
Experiment 4th. ^iv of the bruised root was digested in 
viij of water, for the space of two weeks, the whole was 
then transferred to a retort by means of a sand bath. The 
liquid which passed over had the odour and to a slight de- 
gree the peculiar taste of the root. 
With ammonia it afforded a precipitate which was re-dis^ 
solved by the alkali in excess. 
I was unable to procure any of the sanguinarina from the 
precipitate, but with sulphuric acid it formed a red solution, 
proving the presence of that salt. 
Of the several processes which I have pursued for the ex- 
traction of sanguinarina from the blood root, that of experi- 
ment 3d I found to answer the best, being the most simple, 
easy of management, and yielding the largest quantity of the 
vegetable alkali. 
Vol. I.— No. I. 
5 
