C 39 8 ] 
Received July 7, 177 o. 
XXXIV. Further Remarks on the Pi 'op er ties 
of ihe Coagulahle Lymph ; on the flopping of 
Hemorrhages ; and on the EfleEis of Cold 
upon the Blood : By the fame. 
Read Nov. 22, and 
Dec. 6, 1770. 
T has been obferved by thole who 
have written on the blocd, that it 
fometimes happens in blood-letting, that the firfl 
cup has. an inflammatory cruft, whilft the laft has 
none; but no fatisfaeftory reafon has been given for 
this appearance. One might fuppofe that it was 
owing to a difference in fome circumftance in the 
operation, fuch as in the velocity with which the 
blood flowed into each cup, or by the latter being agi- 
tated fo as to prevent the reparation of the lymph : but 
I have feen it where there was no difference of this 
l'ort, nor in any other circumftance that I could ob- 
ferve. I have therefore fufpedted that in fuch cafes 
the properties of the blood are changed, even 
during the time of the evacuation ; and in this opi- 
nion I am confirmed by the following experiments. 
Experiment XIX. 
Nine ounces of blood were taken from a woman 
who had been delivered two days before, and who at 
3 that 
