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A new fact respecting huffy blood after venesection. 
It has been generally believed that the cupped appearance met 
with on the surface of the coagulation of blood drawn from 
the arm, arises from the coagulable lymph, when separated 
from the other parts of the blood, having a greater contractile 
power than when intimately mixed with them. 
In a patient who had an affection of the brain in conse- 
quence of an injury to the skull from a wooden shovel, when 
35 years of age, no symptoms came on for 8 months. He 
then had fits, and head-ache, which nothing relieved : he was 
bled to the amount of 68 oz. in 13 days ; but the last two 
cups, although equally buffiy with all the others, were not 
cupped, which took my attention. The appearance is shown in 
the annexed drawing, proving that the coagulable lymph 
has less power of contraction than the other parts of the 
blood. 
The malady was found, by examining the body after death, 
to be inflammation of one of the convolutions of the right 
hemisphere of the cerebrum. 
In the microscope, the upper portion without colour con- 
sisted wholly of globules ~f 0 o and ■■ 3i> 1 00 parts of an inch 
in diameter ; the lower coloured portion was entirely made 
up of globules — Job - and — Jo Q parts of an inch in diameter. 
Professor Brande, who examined the chemical properties 
of these different portions, informs me, “ that the upper por~ 
“ tion had the usual properties of the albumen of the blood. 
When carefully dried, it assumed the appearance and che- 
