( 60 ) 
on the other extreme, would make their own private experience 
a ftandard for that of all, and afcribe the moft extenfive virtues. 
to this infufion. This contrariety of opinion has been particu- 
larly maintained among phyficians * ; which will ever be the cafe, 
while mere fuppofitions are placed in the room of sepremnents 
and facts impartially related. 
Some phyficians, however, avoid both extremes; who, 
without commending it, or decrying it univerfally, admit its © 
ufe, while they are not infenfible of the injuries it may pro- 
duce. It requires no {mall fhare of fagacity to fix the limits 
of good and harm in the prefent cafe :- multitudes of all ages, 
conftitutions, and complexions, drink it freely, during a long 
life, without perceiving any ill effects. Others, again, foon 
experience many inconveniences from drinking any confiderable 
quantity of this infufion, 
Tt is difficult to draw certain Gonclohions from experiments 
made on this herb. The parts which feem to produce thefe 
oppofite effects are very fugitive. We become acquainted 
chiefly with the grofler parts by analyfis. I made the following 
experiments with confiderable care ; but, I own, they inform us 
not fufficiently wherein confifts that grateful relaxing fedative 
property, which proves to the- generality of mankind fo refrefh- 
ing; nor from whence it is, that others feel from the pleafing 
beverage fo many difagreeable effets. Accurate obfervation 
would infiruc us in this difficult inveftigation, more than fimple 
experiments on the fubject itfelf. 
—. Compare Joh. Ludov. Hannemane de potu calido in Mifcell- curiof. - Simon 
| Pauli de abufu Thee et Tabaci.. Tiffot’on the difeafes of literary and fedentary 
: perfons, a with Waldfinick i in Difput, var. argum, &c, 
- EXPE- 
