CORRESPONDENCE. 85 
persists in giving his countenance to the wrong, and in seeking 
adulation at the expense of one of the most valued industries of 
America. Yours, etc., 
James Law, F.li.C.Y.S. 
(The New York Times has bo far failed to publish the above.) 
POST MORTEM EXAMINATION OF COWS AFFECTED WITH PLEURO¬ 
PNEUMONIA. 
By Prof. A. A. Holcombe, D.V.S. 
In Blissville, Long Island, February 21, 1879, under super¬ 
vision of General Patrick, Prof. Law, aided by Drs. McLean and 
Bell, made post mortem examination upon three of the cows con¬ 
demned to death from contagious pleuro-pneumonia. Subject No. 
1 was a fine medium sized cow in good flesh, but presenting marked 
objective symptoms of the disease, the respiration being rapid, 
short and labored, the cough frequent and suppressed, and the 
temperature above 104.6° Fahrenheit. After destroying her life 
the left front leg and other muscular tissues were removed, the 
ribs cut across, and the left lung exposed. To one unacquainted 
with the characteristics of the specific form of pleuro-pneumonia, 
the conclusions would have been at once reached that there was 
an error in the diagnosis, for this lung presented a nearly, if not 
quite, normal appearance, but removing it and exposing the right 
lung there was seen to be an almost complete consolidation of the 
entire tissue, with extensive adhesions to the costal plura. The 
diaphragmatic pleura showed patches of effusion upon its surface. 
Making a longitudinal section through the lung, the beautiful 
marbled appearance common to this disease was seen, with com 
mencing suppuration in the parts farthest advanced in the diseased 
process; a peripheric lobule presented a marked, acute red in¬ 
fraction as the result of obliteration of the supplying nutritive 
artery. The pleural cavity contained but little effusion, while 
the pericardium was entirely devoid of lesions. 
No. 2 was also a medium sized cow rather thin in flesh, with 
