PRIZE ESSAY. 
345 
is useful. “ Medicinally, laxatives—hydrogogue salines in prefer¬ 
ence—should always be administered in the outset * * 
Skin and diuretic medicines —as cream of tartar, acetate of 
ammonia, camphor and nitric ether, with carbonate of ammonia 
—should be given in the early stages; stimulants later. In the 
convalescent stages, iron compounds, arsenic, and hyposulphite of 
soda with nux vomica or strychnia alternated with dilute sul¬ 
phuric acid.”* 
Bleeding is not to be recommended, nor are counter-irritants 
successful. 
PATHOLOGICAL ANATOMY. 
In order to understand more clearly the post-mortem appear¬ 
ances seen inpleuropneumonia contagiosa , we may briefly indi¬ 
cate the normal anatomy of the bovine lung. The chief peculi¬ 
arity, and one which involves the other peculiarities, is the dis¬ 
tinctness with which the lobules are marked off and separated 
from each other. This division is accomplished “ by thick layers 
of cellular (areolar) tissue, continuous with the internal face of 
the visceral pleura (those septa are rather the interlobular ramifi¬ 
cations sent off from the subserous enveloped) Dietrichs, who first 
drew attention to this peculiarity in the larger ruminants, has 
justly remarked that it perfectly explains the altogether special 
characters of lesions of pneumonia in these animals.”! 
The special points in the normal anatomy have been thus 
summed up: 
1st. The vascular and bronchial territories are distinctly de¬ 
fined and independent of one another. 
2nd. The lobules of the lung in the ox are quite distinct, and 
may be separated without injuring their air-cells, (they may be 
drawn £ of an inch apart without injury to the connective tissue 
connecting them.) 
3rd. Each lobule is enveloped in a case of connective tissue, 
which contains a rich plexus of lymphatics. 
4tli. A sheath of delicate connective tissue also surrounds the 
* Professor Walley. 
tChauveau. See also Straugeway’s Anatomy. 
