Pane Mr. Davinson’s Account of 
‘true Quinguina of Linnzus. He brought the bark, flowers, 
and feeds, to Dr. Youne of the General Hofpital, and trial 
was made of it there; but not being fufficiently dried, its ftrong 
emetic and purgative qualities prevented its exhibition. 
The publication of Dr. SaunpERs, which I received about 
two months ago, mentioning the introdu@ion of a {fpecies of 
bark of a redder colour, and poffefling greater powers than 
the bark formerly in ufe, induced us here to try the bark of 
this country. Dr. Youne had by him fome that was col- 
le&ted in General GranT’s time: on account of the length of 
time it had been kept, and its being fufficiently dried, he has 
met with all the fuccefs he could with. 
It is manifeftly more aftringent than the bark, and the bitter 
is likewife more durable on the palate. 
Hitherto I have generally ufed the cold infafion, either in 
lime or fim’ple water, in the proportion of one ounce to three 
pints of the water. I have likewife given it in fubftance from 
twenty to thirty grains; but never exceeded the laft quantity, 
for I never found the ftomach able to retain more than twenty 
grains. , 
Joined with the Canella alba, it forms in fpirits an agreeable 
and elegant tinéture. I have made a tincture from the feeds, 
which are infinitely ftronger in tafte than the bark itfelf. 
(Signed) GEO. DAVIDSON. 
Mr. 
