C 831 ] 
ing to the degree of calcination. He added, that as 
all his experiments relating to the antifeptic quality 
of lime-water were made in a furnace, heated to the 
degree of human blood, a circumftance, which he had 
marked in his Obfervations *, the uncalcined parts 
of the lime would in that ftate become more aCtive 
in promoting putrefaction, than when the trials were 
made in cold water. 
And indeed it muft be owned, that when any ex- 
periments are made on medicinal fubftances out of 
the body, the nearer we can make them to the heat 
of the blood, and to other circumftances thofe fub- 
ftances muft undergo in the firft paffages, the more 
juft the inferences will be, that are drawn from thofe 
experiments. 
In regard to that quality of lime-water, in pre- 
ferving fifh longer fweet than flefh, Dr. Pringle took 
notice, that he doubted it was a common miftake to 
account fifh a more corruptible fubftance than the 
flefh of land animals. For although fifh might be- 
come fooner ftale for eating than m©ft flefh-meats, 
yet that fifh did not fo foon rife to a rank degree of 
putrefadtion as flefh j and therefore that the former 
would be kept longer tolerably fweet than the latter 
by any kind of antifeptic. 
* To one of the experiments preceding that upon the lime- 
water, the author fubjoins the following note : “ All the following 
« experiments, whether made in the lamp-furnace, or by the fire, 
« were in a degree of heat equal to that of the human blood, 
« viz. ioo deg. of Fahrenheit’s fcale.” p. 383. 
cv. 
