582 
COMPTE-RENDU OF THE 
The quantity of water in the blood varies from 774 to 813 out 
of 1000 drops of blood. 
The mean quantity of the solid materials of the serum varies 
from 75 to 92 in every thousand parts of blood. 
The power of the constitution and substantial nourishment pro- 
duce, in different individuals of the same species, a very appre- 
ciable difference in the figure and number of the globules. 
Circumstances of an opposite character have an opposite effect 
on the globules. 
As to an analysis of blood in a state of disease, the following 
were the results that were obtained : — 
In the process of inflammation, the quantity of fibrine increases 
in variable proportions according to the situation and intensity 
of the disease. A diminution of the globules was remarked in 
all consumptive diseases. It was particularly so in the rot in 
sheep. When sheep died of the rot, the foetus usually presented 
the peculiar lesions of peripneumony. 
In the lungs of ten foetuses that had undergone abortion, the 
cows having been attacked with chronic pneumonia, there were 
several spots : in one lung or both there were numerous red, hard 
lobules, easily torn, and which already constituted little lobular 
patches of pneumonia, in an acute state. 
In seventeen cases the cattle were destroyed on account of 
their being attacked by incurable chronic pneumonia, the lungs 
of the foetus were hepatized, grey, and tuberculous. Twelve of 
them had lobular pneumonia, presenting all the characters of 
sub-acute disease. 
Of twenty-five calves, from fifteen days to two months old, 
coming from cows labouring under sub-acute partial peripneu- 
mony, during life or after death, ten were affected by sub-acute 
peripneumony, and died, after an illness of from twenty to forty 
days. Eight having been opened, enabled us to trace the chronic 
state of the disease. The other seventeen were either sold or lost 
sight of. 
These facts, although few in number, yet satisfactorily shew 
that cows attacked by chronic pneumonia may transmit the dis- 
ease to the foetus ; and that the calves born from cows attacked 
by this malady may probably have the germs of the evil, or a 
disposition to contract it soon after they have commenced their 
extra-uterine life. 
Chair of Chemistry. 
The reactions which many of the immediate principles of ani- 
mal and vegetable substances exercise on a certain number of 
salts and metallic oxydes, hav*e, during the last year, been the 
