[ 55 <* ] 
9. I examined Cantharides , dried Vipers, and 
Ruffian Cajior , all animal Subftanccs, and therefore 
mod likely to prove feptic. The Flies were tried 
both with frefh Beef, and with the Serum of human 
Blood } the Vipers only with the former ; bur neither 
of them haftened Putrefaction. And as for the Caf- 
tor , fo far from promoting this Procefs, that an In- 
fufion of 1 2 Grains oppofed it more than the ftandard 
Salt. 
10. After finding no Septics where they were 
mod expeded, I difeovered fome which feemed rhe 
leaft likely ; viz. Chalk, the Tejiacea , and common 
Salt. 
Twenty Grains of Crabs-eyes prepared, were 
mixed with 6 Drachms of Ox’s Gall, and as much 
Water > into another Phial was put nothing but Gall 
and Water, in the fame Quantity with the former, 
and both being placed in the Furnace, the Putrefac- 
tion began much fooner, where the Powder was, 
than in the other Phial. I infufed afterwards in the 
Lamp-Furnace 50 Grains of prepared Chalk, with 
the ufual Quantity of Flefh and Water; and ob- 
ferved* that the Corruption not only began fooner, 
but went higher by this Mixture; nay, what had never 
happened before, that in a few Days the Fkfh re- 
folved into a perfed Mucus . The Experiment was 
repeated with the fameEffed ; which being fo extra- 
ordinary, Ifufpeded fome corroftve Subftance had been 
mixed, with the Powder : But, for a Trial, a Lump 
;m;i b- J b • , - of ' 
.0 
Caufe of the Acidity. This kind of Fermentation between animal 
and vegetable Subftances, being hitherto overlooked, ihall be there- 
fore fet forth in my next Paper. 
CJ fJ ' 
1 
