DISTRIBUTION OF PRIZES. 
601 
which is no longer liquid, and yet no longer solid. This matter 
is formed of a kind of concretion of a greyish white colour — less 
deep than the fluid itself, and less consistent. 
The lymph, at first abundant, afterwards diminishes around the 
concretions. 
The walls of the vessels themselves are thickened at nearly the 
same time that the concretions are formed. The valves likewise 
share in the thickening. 
Little by little the quantity of lymph diminishes in the lym- 
phatic vessels, perhaps from the difficulty of circulation which 
is now experienced. 
The sides of the vessels insensibly approach each other. They 
come in contact with each other. An adhesive process esta- 
blishes itself, which, when it is completed, leaves no trace of the 
existence of the vessels. 
The coagulum has then all the characters of an encysted tu- 
mour. 
The coagulum, gradually dissolved by the serosity which is 
alternately exhaled and absorbed in the cyst, concludes by dis- 
appearing in its turn, and the walls of the cyst adhere to each 
other. 
Such is the most common march of disorganization, when 
arrived at this point. 
Most frequently one of the points of the cyst gives way. There 
is a softening and deliquescence of the coagulum, perforation of 
the surface of the mucous membrane, and the formation of ulcers 
or chancres. 
The veins undergo lesions a little more resembling those of 
the lymphatics. 
The arteries sometimes undergo an analogous change ; but this 
case is rare, and is only seen when the malady has pursued its 
course slowly. It is still more rare for complete ulceration of the 
walls of the artery to take place. 
The author then proceeds to the alterations in the fluids. He 
acknowledges that his researches on this point have not been very 
extensive. He hopes, ere long, to complete his examination. 
In the different portions of the mucous membrane of the nose, 
he finds the same kind of alteration ; and, finally, he is disposed 
to believe that pulmonary tubercular disease — which is the result 
of the affection of glanders — is different in its formation from 
tubercular phthisis. 
Memoirs of the Kcryal and Central Society of Agriculture , 1842. 
