MISCELLANY. 
79 
of tubes of rather large diameter, convey the gas, first into a washing 
bottle, and then through the two-necked bottles containing the solution. 
The heat applied to the flask should be gradually increased, so as to pro- 
duce a regular, but not too rapid evolution of gas. 
The process having continued thus for ten or twelve hours, may be 
stopped. The solutions contained in the two bottles are to be mixed 
together, filtered, and evaporated, so as to yield crystals of hyposulphite 
of soda. 
The flask will contain sulphate of iron, which may be dissolved out 
and crystallized. — Pharm. Journ., from Journ. de Chimie Med. 
Note on the Origin of East India Kino. — A. communication was read 
from Dr. Royle with reference to the origin of East India kino. Several 
conflicting opinions having been expressed by Pharmacologists as to 
the tree which yields this product, Dr. Royle and also Dr. Pereira have 
for some time been endeavouring to procure authentic information on the 
subject. Dr. Royle has at length succeeded in ascertaining, from unde- 
niable evidence, that East India kino is an exudation obtained from the 
Peterocarpus marsupium. He has also received an account of the man- 
ner in which it it is collected, which account has been furnished by Mr. 
J. Brown of Anjara Kandy, on whose estate the whole of the Kino brought 
to this country is said to be produced. 
The substance of the communication was only briefly stated to the 
meeting, as the paper was intended for the Scientific Committee, and it 
will therefore be brought forward at a subsequent meeting in a more 
mature form. — Ibid. 
Duflos i Method of Purifying Crude Hydrochloric Jlcid. — MM. Hensler 
and Riegel have tried this method, and found it to answer well. 
Mix fifteen pounds of crude hydrochloric acid with five pounds of 
water and one ounce of sulphate of iron ; expose the mixture to the air 
for some time, and when clear pour it into a retort, and distil, at a mode- 
rate heat, three-fifths or three-fourths. 
The product of distillation is clear, colourless, of a proper degree of 
concentration, and quite pure. In the neck of the retort a yellowish white 
sublimate will be observed. — Ibid, from Pharm. Central Piatt. 
On the Portion of Opinm which is Insoluble in Cold Water. — By Stanis- 
laus Martin. — It is a very general opinion that water extracts all the 
active constituents from opium ; but M. Martin has observed the residue 
of opium, which is insoluble in water, if subjected with sugar and yeast 
