[ 2*6 ] 
that degree daring the eleven minutes, at the end 
of which time the vein being opened, the blood was 
found to be fluid, and in a few minutes after, being; 
laid open to the air, it coagulated as it ufually does* 
Now as the blood, in the lafl: experiment but one, was 
coagulated, when the heat had never rifen above 
120° and an half;, and in this experiment was fluid, 
though it had been expofed to a heat of 1 1 4 0 ; we 
may therefore conclude, that the coagulable lymph 
in the blood of a dog, in health, is fixed in a degree 
of heat between 114 0 and 120 \ of Fahrenheit^ 
thermometer. 
As to the degree of heat at which the lymph in 
human blood coagulates, I have not yet had an op- 
tunity of trying it in a more fatisfadtory way, than 
with the mixture with Glauber’s fait, in which date 
it coagulates at 1 25 As we find that the human 
blood and that of a dog jelly nearly in the fame time, 
when expofed to the air, 1 think it is probable, that 
the precife degree of heat at which the lymph of the 
human blood coagulates, is between 1 14 0 and 120° 
I have thought of making the experiment on the um- 
bilical cord of a recent placenta , which is the mod 
likely way of coming at the truth. 
The degree of heat, at which the ferum of the 
blood (which fhould not be confounded with the 
lymph) coagulates, is generally faid to be 150° ; but 
from the trials I have made, I am inclined to be- 
lieve it requires a greater heat to fix it. My ex- 
periment^ were made in the following manner. 
Ex- 
