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XXXII. Obfervations and Experiments on 
different ExtraEts of Hemlock : By Mi- 
chael Morris, M. D. F. R> S. 
Read May 24, T "\R, Wade, an eminent phyfician at 
I/64 ' J / Lifbon, having lately communi- 
cated to the London Medical Society, a number of 
caffes, in which the extract of Hemlock prepared at 
Coimbra in Portugal, had been given with extraor- 
dinary fuccefs, and having fent me at the fame time 
fpecimens of the luccefsful extract, and alfo of the 
extra&s of Hemlock prepared at Lifbon and by Dr. 
Storck’s Apothecary at Vienna, which two laft-men- 
tioned extra&s he had prefcribed for the fpace of 
three years, in various disorders, to little or no effedt; 
I thought an experimental inquiry into the com- 
ponent parts of thefe extracts and that ufed in Lon- 
don might be attended with fome ufeful or curious 
confequences ; more efpecially as this medicine was 
near loling its credit intirely, from its little fuccefs 
here in thofe diforders in which it had been moft 
ftrongly recommended by Dr. Storck. I think it not 
unneceffary to premife farther, that the extract pre- 
pared at Coimbra is not fo moift as the other extracts, 
and that it has been given for a confiderable time at 
the dofe of a drachm and a half twice a day with- 
out producing the lead; difagrecable fymptom. 
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