RESEARCHES UPON SALICIN. 
161 
commences, and the liquid becomes more or less acid, and of an 
orange yellow; in time the liquid begins to be cloudy from the 
formation of a yellow crystalline matter. This substance, se- 
parated by the filter, washed and dried, appears in the form of 
yellow pearly microscopic crystals. It is but little soluble 
in water, and absolute alcohol; more so in dilute alcohol. Its 
odor is disagreeable and peculiar, its taste peppery and similar 
to its odor. Heated in a retort, it fuses into a yellow liquid, 
and then decomposes, and there distil over, water containing 
hydrochloric acid, and a colorless oil, leaving a residue of car- 
bon. 
This matter, burnt with"oxide of copper, gave for — 
I. 0.3S2 matter, 0.142 water, and 0.500 carbonic acid. 
II. 0.500 " 0.200 " " 0.779 " 
III. 0.436 " 0.135 " " 0.765 " " 
Also — 
IV. 1,050 matter produced 0.965 fused chloride of silver. 
V. 1.026 " " 0.968 " " " 
This composition agrees with the formula — 
C 42 
1007.24 
42.94 
H 24 
149.76 
4.00 
Ch 
885.30 
23.65 
o n 
1100.00 
29.41 
3742.30 
100.00 
Whence it results, that under the action of chlorine, salicin 
loses four atoms of hydrogen and gains four atoms of chlorine. 
If, while the current of chlorine is passing through the water 
containing salicin, this mixture is kept at the temperature of 
60°, a red, oleaginous liquid is formed, and falls to the bottom. 
This new matter, when cold, has the consistence of turpen- 
tine, and an acrid, peppery taste; it is insoluble in water and 
the acids, but is soluble in alcohol, ether and the alkalies. This 
matter, previously perfectly dried, yielded on analysis from 
I. 0.756 matter, 0.193 water, and 1 .036 carbonic acid. 
II. 0.640 " 0.153 " 0.8S8 " " 
III. 0.530 " 0.798 chloride of silver. 
