4 Sir Everard Home’s farther investigation 
tion of the coagulum, throws great light upon the materials 
of which the blood is composed. 
Till this discovery was made, we knew of no globules in 
the blood but the red globules, either enclosed in their colour- 
ing matter, or deprived of it : indeed these smaller ones being 
held in solution in the serum, are only brought to view by 
the act of coagulation, and under the same circumstances we 
find the salts crystallize. 
To ascertain whether these small globules constitute the 
substance thrown out in inflammation, Mr. Bauer examined 
a small portion of a mass of coagulable lymph taken from 
the vagina of an ass, where it had been deposited by a violent 
attack of inflammation ; and another portion from the internal 
surface of an inflamed vein.* He found both substances made 
up of the small globules just discovered, mixed with a few 
red globules, deprived of their colouring matter. The glo- 
bules which in a former Lecture were stated to have been 
produced in the serum, are now found to be similar to these, 
and had been held in solution in the serum when put into the 
tube. 
The globules found by Basilius in the serum, after filtra- 
tion through paper, must have been of the same kind. 
In the prosecution of this enquiry, I procured the coagulum 
of some highly inflamed blood, as it is termed. The buff 
was very thick and firm, the lower portion loose in its tex- 
ture. Mr. Bauer found the buff to consist almost wholly of 
the small globules, which I shall now call those of lymph, 
* Both of these preparations are described in Hunter’s Work upon the Blood, 
Inflammation, and Gun-shot Wounds. 
