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BRITISH PHARMACEUTICAL CONFERENCE. 
tities in opium; without this assistance we could scarcely have procured 
them in a state of reliable purity. 
In some remarks which followed the paper, the authors drew the attention 
of the meeting to a new alkaloid procured from opium by Messrs. T. and 
H. Smith, a specimen of which they were enabled to lay before the meeting 
through the kindness of the discoverers. They stated that for want of time 
and sufficient quantity to work upon, the Messrs. Smith had not yet deter¬ 
mined its chemical composition nor all of its reactions, but exhibited to the 
members present the brilliant colour-reactions which the minutest quanti¬ 
ties yielded, viz.:—a deep blue on treating with concentrated sulphuric acid, 
turning rapidly to bright green on the addition of a small crystal of nitrate of 
potash. 
EXPLANATION OF PLATES. 
Plate I. 
Microscopical Appearance of Opium Principles. 
Fig. 1. Morphine. 
„ 2. Narcotine. 
„ 3 a. Sulphate of Morphine. 
b. Meconate of Morphine. 
ba. Commercial salt crystallized from solution in weak alcohol. 
bb. Crystallization from mixed solutions of Morphia and Meconic 
Acid. 
„ 4 a. Codeine. 
aa. Crystallized from Alcoholic solution. 
ab. Crystallized from Aqueous solution. 
b. Thebaine. 
„ 5 a. Meconine. 
b. Meconic Acid. 
„ G a. Narceine. 
b. Papaverine. 
ba. Crystallized from Alcoholic solution. 
bb. Crystallized from Aqueous solution. 
Plate IT. 
Fig. 1. Tinctura Opii (Turkey Opium), prepared by the Authors as standard. 
,, 2, 3. Specimens of Tincture alluded to in the text. 
„ 4. Extractum Opii (Turkey), 
,, 5 a. Commercial Extract of Opium, imported. 
b. The same, re-dissolved, filtered, and evaporated. 
„ 6. Liquor Opii Sedativus, prepared from Patna Opium. 
Plate III. 
Liquor Opii Sedativus (Turlcep Opium). 
Fig. 1. Battley’s. 
„ 2 a, b. Two specimens prepared by the authors by slightly different 
processes, from different samples of opium. 
,, 3. Mr. Morson’s, alluded to in the text. 
„ 4, 5, G. Specimens sent out by three operative chemists of standing hi 
London. 
Plate IV. 
Fig. 1. Extractum Opii, prepared from Patna Opium. 
5} 2. „ ,, Malwa Opium. 
3. ,, „ Persian Opium. 
,, 4. Tinctura Opii, prepared from Patna Opium. 
53 5. „ „ Malwa Opium. 
33 6* ,3 33 Persian Opium. 
* The Plates will be given in the December Number. 
