[ 41 ° ] 
Experiment XXIV. 
On December the thirteenth, I cut out two pieces of 
the jugular vein of another dog, immediately after his 
death. One piece was put into cold water, and the 
other into water kept warm by a lamp, fo that the heat 
never varied more than between 90 and too 0 . At the 
end of three quarters of an hour, that in the warm 
water had in it a coagulum as large as a garden 
pea j but that in the cold water, on being let out 
into a cup, was found to be quite fluid. Twenty 
minutes after being expofed to the air, that which 
had been in the cold water was coagulating ; but that 
from the warm water neither then nor afterwards 
fhewed any figns of farther coagulation : fo that it 
feemed not only to have jellied whilfl in warm wa- 
ter, but to have begun to part with its fernm. From 
this experiment, it feems probable that the coldnefs 
was that property of the water to which the lefiened 
difpofltion to coagulate was owing ; but, to be more 
fure of this, and to fee whether the blood might not 
be kept fluid a longer time by thefe means, I tried 
as follows. 
Experiment XXV. 
On January the fourteenth, I cut out a piece of 
the jugular vien of another dog, and put it into 
oil, in which the thermometer flood at 38°. At 
the end of fix hours it was taken out, and the red 
particles were obferved through the coats of the 
vein to have in great meafure fettled to one fide* 
The 
