[ S3 1 ] 
of white Poppy-heads, and another with the exprefled 
"Juice of Lettuce, and found them both above the 
Standard. 
By thefe Specimens we may now fee how exten- 
five Antifcptics are; fince, belides Salts, fermented 
Spirits, Spices and Acids, commonly known to have 
this Property, many Refins, A ftr ingents, and Refrige- 
rants, are of the Number; and even thofe Plants 
called Anti-acids, and fuppofed Hafteners of Putrc- 
fadion ; of which Clafs Horfe-radifh is particularly 
antifeptic. And indeed after thefe Tria's, 1 expeded 
to find all difiolvable Subfiances endowed with fome 
Degree of this Quality ; till, upon further Experi- 
ments, I perceived fome made no Refiftancc, and 
others promoted Corruption. But before I enter 
upon that Part of my Subjed, it will be proper to 
relate fome other Experiments more nearly connected 
with the preceding, 
f. Having feen how much more antifeptic thefe 
Infufions were than Sea-Salt, I then tried whether 
Plants would part with this Virtue without Infufion. 
For this Purpofe, having three fmall and thin Slices 
of the Lean of Beef, I rubbed one with the Pow- 
der of the Bark, another with Snake-root, and a 
third with Camomile-flowers. It was in the Heat 
of Summer, yet, after keeping thefe Pieces for fe- 
veral Days, I found the Flefh with the Bark but 
little tainted, and the other two quite fweet. The 
Subflance of all the three was firm ; particularly 
that with the Camomile, which was fo hard and 
dry, that it feemed incorruptible. Why the Bark 
had not altogether the fame Efted, was probably 
owing to its dole Texture. 
Y y y 
6 , 
