( 8i ) 
Digeftion. The greaiefl: part of what (lie cat or drank, 
came through the Ulcer for eight or ten Days, fo that 
1 had no hopes of ever curing it, yet contrary to my 
Expedation in about fix Weeks Ihe was petfedly 
cured, and is now living and in good Health. 
VIII. Jn /Account of the quantity of ^ejtn in the 
Cortex Eleiitheriac, !By Mr. John Brown, Chy» 
7niflj F. R. S. 
Douglas having lately deliver’d in a Paper to 
be read before this Society, giving an account 
(from the Hiftory of the Royal Academy at Paris) of 
the Cortex EkutherU ; and among other things having 
Paid of it, that Monfieur Boulduc had from one 
Ounce of the Bark, by means of Spirit of Wine, 
gotten 5 Drachms of Refinous Extrad, there re- 
maining 3 Drachms of Faeces \ and that Gentleman’s 
account of fome of the Properties of this Bark being 
founded on the quantity of Refin fuppos’d to be 
contain’d in it .* 1 propos’d to Dr. Douglas and fome 
other Gentlemen of the Society, (who agreed with 
mein believing, that fcarcely any part of any Plant 
whatfoever would yield that quantity of Refinous 
Extrad^ to try the Experiment,^ which was perform’d 
after the following manner. 
I took two Ounces of pick’d Bark, and digefled 
it in redify’d Spirit of Wine, which was often de- 
• canted and frefli Spirit put on, until the Bark would 
yield no more Tindure. The impregnated Spirit 
' being evaporated by a very gentle heat ; there was 
left two Drachms of Refinous Extrad ; the remains of 
Q. 
the 
