Another _celebrated Physician_ maintains, that this _yellow Liquid_ is not poisonous, that he had given it to Pigeons as Food, without their being at all disorder’d thereby.—That the Viper’s Bite, he had always found mortal to Animals, even after the venemous Bag was taken out, as well as before.—That therefore the Poison must lie in the _irritated Spirits of the Viper_, which it exhales in the Ardor of its biting, and which are so cold that they curdle the Blood, and stop the Circulation[48]. Footnote 48: _Monsieur Charras._ Both these are ingenious Men; their Systems are opposite, yet both maintain’d by well-attested Experiments. The Publick, however, give into the Sentiments of _Seignior Redi_, as answering the best to the Mechanism of the Parts. Seignior _Vigani_ has in some measure reconciled these two Learned Combatants, who alledges, that the _yellow Liquor_ wherewith Dr. _Redi_ kill’d Pullets, _&c._ after the death of the Viper, was either saturated with the Spirits of the enraged Viper, by whipping it before, or else (as ’tis probable) in the hot and dry Climates of _Italy_, those Creatures are more venemous than in colder Countries. This Poison of Vipers seems to lie in their hollow Teeth, because the Mountebanks of old, to impose on the People, used to stop those Cavities, or hollow Places in the Teeth, with some kind of _Paste_, before they suffered the Vipers to bite them in sight of Spectators; which was commonly done, and succeeded according to their wish;—and sometimes, with a Needle scratch’d the Gums, and press’d out the Poison[49]. _Pliny_ says, they have but one venemous Tooth. Footnote 49: _Lowthorp_’s _Abridg._ vol. ii. p. 815. Dr. _Mead_, having given the various Symptoms attending venemous Wounds, proceeds to the Remedies; and in particular, mentions the _volatile Salt of Vipers_, as alone sufficient to do the Work, if given in due time, in proper quantities, and duly repeated[50]. Footnote 50: _Mechanical Account._ Mr. _Robert Burdet_, an _English_ Merchant at _Aleppo_ (in _Turkish Asia_) was bit by a Serpent about ten in the Morning, and died about three in the Afternoon. The People of that Country say, the only Cure in that Case, is immediately to suck the Wound; but they must rub first their Gums and Teeth with Oil, that none of the Poison may touch any place where the Skin is broken, and spit out immediately what they suck[51]. Footnote 51: _Lowthorp_’s _Abridg._ vol. ii. p. 814.