83. 
ON ARUM TKIPHYLLUM. 
The coloring property resides only in the exterior en- 
velope of the seeds, as their interior substance, or the peri- 
carp enclosing them, do not possess it. 
When an alcoholic tincture of the seeds is evaporated, a 
small quantity of yellow fixed oil separates. 
In conclusion it may be observed, that the root of Arum 
triphyllum contains: 
1. A peculiar, pungent, acrid principle, which resembles, 
in its leading characteristics, that contained in other 
species of the Arum genus, and which has not been 
isolated. 
2. Fecula. 
3. Vegetable Albumen. 
4. Gum. 
5. Sugar. 
6. Extractive Matter. 
7. Lignin. 
8. Salts of Potassa and Lime. 
To which should be added the substance contained in the 
seeds, which yield a deep red color with ammonia, and a 
yellow fixed oil, which they also contain. 
