ON ARISTOLOCHIA RETICULATA. 
15 
8th. Some of the root was incinerated, and the ashes 
thrown into water, so that any potassa which was present 
might be dissolved out : to this solution dilute nitric acid 
was added and then evaporated to dryness. Crystals possess- 
ing the taste of nitrate of potassa were obtained. 
1st. An infusion of JLristolochia reticulata was made, 
of the same strength as that of the Aristolochia serpen- 
taria, and yielded, when the tincture Was added, the blue 
color of iodide of starch. 
2d. The same infusion was filtered, and on having the 
solution of subacetate of lead added to it, gave the same 
precipitate as the JLristolochia serpentaria, but rather 
more abundant. 
3d. A cold infusion was made by displacement, of the 
strength of half an ounce of the root to eight ounces of 
water ; this yielded, when an acidulated solution of ferro- 
cyanate of potassa was added, a slight precipitate upon 
standing over night. 
4th. A cold infusion was made by displacing an ounce 
of the root, and then evaporated to dryness. The gummy 
extract thus obtained was possessed of the bitterness of the 
root, but less so than that obtained from the tincture by the 
distillation of the alcohol and oil. It was greater in amount 
than that obtained from the Jlristolochia serpentaria, 
5th. The tincture was made of the strength of one ounce 
of the root to eight ounces of alcohol ; and when water 
was added to this, a milkiness similar to that observed in 
the Jlristolochia serpentaria was visible; but this, for the 
reason before given, was not to be relied on, and conse- 
quently the following experiment became necessary. 
6th. A tincture was made by displacing an ounce of the 
root with alcohol ; it was then placed in a retort, and the 
alcohol and oil distilled off; a resin was obtained having 
the same color and taste as that obtained from the Jlristo- 
lochia serpentaria ; not so much in amount, but of firmer 
