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been dried by keeping. I once feparated the thick 
inflammatory Crufl of pleuritic Blood from the reft 
of the Mafs; and, dividing it, I put one Portion into 
diftill'd Vinegar, the other into Spirit of Hartfhorn; 
and after keeping the Infufions above a Month in 
the middle of Summer, I found the Piece which 
lay in alcaline Spirit as found as that in the Acid. 
Another time I put in one Phial about an Ounce 
and a half of an equal Mixture of Ox's Gall and 
Water, with ioo Drops of Spirit of Hartfhorn; and 
in another as much of ihe Gall and Water without 
any Spirit. The Phials, being corked, were fet by 
a Fire, fo as to receive about the Degree of animal 
Heat; whereby, in lefs than two Days, the Mixture 
without the Spirit became putrid, but the other was 
not only then, but after two Days longer untainted. 
I afterwards infufed two Drachms of the Lean of 
Beef with two Ounces of Water and half a Drachm 
of Salt of Hartfhorn. Another Phial contained as 
much Flefh and Water with a double Quantity of 
Sea-Salt: In a third was the Flefh and Water only 
to ferve by way of Index. Thefe Phials were placed 
on a Lamp-Furnace, in a Heat varying between 94 
and 1 04] Degrees of Fahrenheit's Scale. About 18 
Hours after Infufion, the Contents of that Phial 
which ferved as an Index, were rank ; and in a few 
Hours more that with the Sea-Salt was alfo putrid; 
but the Flefh with the volatile Alcali was found, and 
continued fo after (landing 24 Hours longer, in the 
fame Degree of Heat : And that the Smell oftheHart's- 
horn might occalion no Deception, the Piece of Flefh 
was wafhed from the Salt, and dill fmelled fweet. 
About the fame time I took three Pieces of frefh 
Beef, of the fame Weight as above; and laying two 
4 of 
