Signor, Redh Letter, that he is iiiuch more confirmed in it. 
The Contro verfie confifts chiefly in this ; i . That Signer J{^<5/i 
will have the Jellow liquor contain'd in the bags of the Teeth- 
gum of Vipers to be the only and true feat of their Venous. 
2. That this liquor is indeed not Venomous being taken at the 
mouthy but only when let into a wound , made either by the live 
Animal, or even by a dead ones teeth , thruft into ones flefli after 
it is dead. 3..That the fame Juice drawn from a dead Viper , as 
well as from a live one, is ah^^ies venomous, if it pafs into..a 
wound and mingle with the bloud of the wounded Animal , vi h<^- 
iter it be Jiquid, or dried to powder. 4, That it kills generally 
all forts of Animals being wounded, and receiving of this liquor 
into the wound. Whereas M. Chards afferts , i . That the Venom 
of Vipers is on'y in the enraged Spirits. 2. That the Jellow li- 
quor, as well of a live and even a much angred Viper, as of a 
dead one, hath no Venom at a^l in it, neither in the biting, nor 
w^hen taken inwardly , nor kt into a wound and mixt wdth the 
bloud , nor any other way, and confequently that it kills and 
infects no kinds of Anin^als , but is a pure and very innocent 
^Saliva. 
• To make good thefe afTert ions, M. Chartas affirms to have made 
new Experiments , in the prefence of two or three hundred per- 
fons,Phyficians and others,CcCpab]e to Judge,and of great veracity; 
and to have found abundant caufe to adhere to the refult, he had 
made from his former tryals, ^'Z^. That never any one Animal of 
all thofe, he wounded, died of the jel!ow liquor let into the 
wounds, though drawn hot from the bags of the gums of Vipers 
much enraged. Thefe Experiments are at length defcribed in his 
If it be faid in favour of Signor Rediy That the diverfity of 
Qimars, 6rof food alfo, may change the nature of Vipers , and 
caufethat manifeft difference between the Experiments ; JM. ChA- 
■ras anfvv^ers,that it cannot be,That the nature of the Jellow liquor, 
^ and that of the Spirits fliould be, fo quite changed ; becaufe, thac 
Xvi'Brmce the fame marks are'foundiathe Jellow liquor with thofe 
defcribed of Italy, and tl at the French Vipers do , without an 
intervention of the faid liquor, kill as readily , as thofe of Italy 
cardd- And he adds, that he hath verified it by very many 
Experiments, That all the Vipers of France, though taken" in very 
differeiit 
