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24
2
with a rubber force pump for assisting aspirations To the open end of the retort was attached apporatio as described he reafter and in the following
order :-
1. A glass T piece with one end corkedze as to form.
an observation lube for noting differences
rences in the odour of the smoke from time
to time.
2, Three Drechse? wosh bottles each containing 100cc of two per cent sulphuric acid
in water.
3. Two Drechsel wash-bottles each containing 100ce of ten per cent potassium hydrate solution.
4. A ten gallon aspirating bottle. This topelter with the force fump enabled a smoke to be produced of the nature and appearance of that oblained by smoking opeum
in the usual way
with the pipe.
The retort was heated in a both of fused potassium nitrate. The smoke at first evolved had the fragrant odour of burning chandoo . As greater heat was afflied the odour gradually changed to one much resembling a foul tobacco pipe. When the temperature of the both indicated 400°°C the opeum seemed to he exhausted, and but little smoke there after came over. The weight of hálán obtained wor This halán was found to be free. grams. from alkaloid. The purified gas in the aspiratas had a benzone-like odour, resembling coal- gas. No portion of this
18.0
gas
gas was absorbed by Cuprous chloride this indicating the absence of