266 Chemical analysis of Euphorbia Ipecacuanha. 
In another experiment six drachms of Euphorbia coarsely 
powdered were infused in eight ounces of distilled water for the 
space of two days, and afterwards boiled for four hours ; the decoc- 
tion was mucilaginous, and of a light brown colour, possessing an 
odour resembling oat-meal. It afforded similar products with the 
preceding ; and was not precipitated or altered in appearance by a 
- solution of tartar emetic, nitrate of potash, or a watry solution of 
opium. 7 
Iodine produced a copious blue precipitate ; thereby indicating 
the presence of starch, which precipitate was collected on the filter, 
in the form of Ioduret of starch. 
