huffy coat oj the blood. 273 
At Colombo, in the island of Ceylon, in January, 1819,1 made 
the following experiment on a young dog nearly full grown. 
An opening was made with a scalpel between the ribs of the 
right side of the chest, thr >ugh which about a scruple of 
arrack was injected into the cavity of the pleura. The lung 
was slightly wounded ; air passed freely through the opening, 
and a little frothy blood was discharged. The animal, at first, 
seemed to suffer much pain, and to be very languid ; but, left 
to itself, it gradually recovered, and in the course of the day 
took some food. At the expiration of twenty-four hours it 
was hot, but apparently not suffering pain ; it was running 
about, and the wound was closed. It was now killed, and 
almost immediately examined. A good deal of vascular 
coagulated lymph was found under the skin round the wound, 
connecting the cutis and the intercostal muscles ; the adjoin- 
ing cellular membrane was inflamed ; some bloody serum 
was effused into the right cavity of the chest ; many pretty 
firm and long adhesions had formed between the pleura pul- 
monalis and costalis, both which were of a reddish hue ; there 
were many adhesions too between the pleura and pericardium ; 
and the pericardium was inflamed, and generally adherent to 
the surface of the heart. 
The coagulated lymph of the buffy coat of the blood may 
be used as an illustration and confirmation of the short time 
in which strong adhesions may form. Liquid, when the blood 
is drawn, coagulable lymph gradually becomes, first viscid, 
and afterwards solid. In the viscid state, as I have frequently 
observed, when it is still transparent, it has the tenacity of 
mucus, and admits of being drawn out into fibres and bands, 
which, soon becoming solid and opaque, very well represent 
mdcccxxii. N n 
