[ 4 ° 9 ] 
to throw the blood into water, and oil, daring the 
winter feafon whilft the heat of the water and oil 
was no higher than 41 ° of Fahrenheit’s fcale. In 
all thofe experiments, I found that the difpofition to 
coagulate was lelTened, the blood becoming more and 
more vifcid, but did not coagulate whilft in that de- 
gree of cold. I (hall next relate thofe experiments. 
Experiment XXII. 
The jugular vein being cut out from a rabbit juft 
killed, was thrown into water of 41 0 of heat, and 
taken out at the end of half an hour ; when the 
blood was found to be ftill fluid, though rather more 
vifcid than natural ; but, after being expol'ed to the 
air for a few minutes, it coagulated. 
Experiment XXIII. 
Two pieces of the jugular vein of a dog, juft killed, 
were put into water, in which the thermometer 
flood at 41 °; one was taken out after twenty 
minutes, and the other after three quarters of an 
hour ; the blood in both was found to be fluid, and 
to coagulate afterwards. 
As it was evident, from thefe experiments, that 
the water had leflened the difpofition of the blood 
to coagulate, I next enquired to what property in the 
water this effect could be owing j and to fee whether 
water that was warmer would not have the fame 
effedt, I made the following experiment. 
Vol. LX. 
Ggg 
Experi- 
