Poftfcript. 
I lhall here only himhy v^sty oi PoJifcrip^m ing^mom 
Propojition of a very worthy Perfonoi the Society^ to 
try whether thef^^^r^^^; Peruvianus would not prevem! 
this Artificid Ague oMx. Liquors prodkiced : which we 
brought to TryaL tho the fiiccefs did not anfwer. For 
we made a ftronglnfufion of our Barh^m common Vinegar 
and then injecfteda quantity of the mentioned t^oto'feW^, 
a confiderable Commotion of the Liquor with a de- 
gree of Ct?/<^, but was not altogether fo fierce as formerly, 
moreover it abated much of rifing to theheigth ofthe 
former Experiment, when ^^^a;» was mixt with the men- 
tionM Cortex : tho in this cale the Acidity was far from be- 
ing quite mortified* As to the cortex I do not intend 
in this Experiment to explain its Nature^ which was only 
made to fatisfy that fagacious Gentleman s Curiofity : for 
I jiever thought that febrifuge did aft the part of an Al^k 
in performing the Cure. But if I can make it appear that 
there are other Medicines that do pertain or belong to the 
families of -^//^/yV, which are effeftual in th^ cure of Agues^ 
• this may ferve to prove, that they do it by deftroying fome 
morbid Acidities in the humours or Vifcera^ and fo prevent 
the lifual Commotions fuch difagreeable Liquids are apt to 
make upon their Conventions. This is mmiitQ.thdX Coral 
and Cr^ij-^^j- and other Tejlaceom bcdies numbered a- 
mongft thefixt Alcalfs znd not only thefe but thofe real 
fixt salts, as Sal dbjinthij, Cardui benediUi &c. as well as the 
volatile Salts in general, do highly Correal and change 
Acid humours where thty can meet ihem, and not only fo 
but do hinder Liquors rhat are apt to (our and corrupt 
from degenerating : ('thus Milk and blood it felfmay fee 
preferved much longer j the firft from growing fourjthelaft 
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