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tringent principle. The tincture of galls poured on the infu- 
sion did not alter it in the slightest degree. The substances 
soluble in water being extracted, I proceeded to examine whe- 
ther it contained any resinous principle ; for which purpose, after 
having dried the residuum, I infused it m an ounce of rectified 
spirit of wine. After an infusion of forty-eight hours, it ac- 
quired no tincture whatever; nor, when poured into water, did 
it give any indication of resin ;_ no froth arose, as is the case with 
saponaceous substances ; on the contrary, the foam immediately 
subsided, which I produced by repeatedly shaking with violence 
the infusion in the distilled water. 
EXPLANATION OF THE PLATE. 
2. A yom very highly naguaee Sobel sagianhasiipiaaeaiaes ae 
3. A very highly magnified capsule just opening, with its very short eical . 
is rn A Sapeule entirely open. 
6. Seed ‘aiguitied: 
7. Receptacle magnified. 
