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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    fuch a quantity of opium. The operation of the opium did not appear fo foon in the other patient as common; but at length produced fymptoms fimilar to thofe juft mentioned. From thefe experiments I am induced to believe, that the opinions of thofe who attempt to prove that opium is deprived of its dangerous properties by )B fermentation, muft be erroneoufly found- _ ed. If the a<flive properties of opium de- pend upon its eflential oil (which I con- ]l|ceive we are led to believe from the ex- periments in a former part of this work), it clearly follows, that the moderate de- gree of heat- necelTary to produce fermen- tation, is by no means fufficient to deprive it of this property. I was led to ufe the fixed air in thefe experiments with a view to difcover its effe&s in the procefs of fer- entation, and alfo to fee whether it pro- duced any change in the aftringency of Jrhe opium. From the circumftances re- lated,