An experimental inquiry into the properties of opium : and its effects on living subjects: with observations on its history, preparations and uses. Being the disputation which gained the Harveian prize for the year 1785 / By John Leigh.

  • Leigh, John, active 1786.
Date:
1786
Catalogue details

Licence: Public Domain Mark

Credit: An experimental inquiry into the properties of opium : and its effects on living subjects: with observations on its history, preparations and uses. Being the disputation which gained the Harveian prize for the year 1785 / By John Leigh. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    procefs of evaporation muft appear evi- dent, as this was the only fecure method by which I could reduce the different fo- lutions to a folid (late, and fo afcertain their different quantities. As I intended to make fome experiments upon the different parts of the opium when they were perfedlly feparated, I avoided applying fuch a degree of heat as might have deprived them of any of their active properties. Having thus fully accomplifhed my views, by procuring in a feparate ftate thefe different parts, I proceeded to examine each feparately, as will appear from the following experiments. E X P E R. XVIII. TO a fmall quantity of the refinous part of opium, procured by the Fourth Clafs of Experiments, after being diffol- D 4 ved