PRISE ESSAY : — PLEUROPNEUMONIA AMONG CATTLE. 415 
yard and undergone treatment, recovered, with the exception of 
one, which lingered for some time, and ultimately died a mere 
skeleton. Four milch cows on the same farm were carefully kept 
apart from the young stock, and escaped the malady. 
Case 20. — Mr. F., during the years 1845 and 1846, sustained 
a loss of nearly one thousand pounds’ worth of stock from the 
epizootic pleuro-pneumonia. Those that were in tolerable condition 
were disposed of, and slaughtered immediately on the first deci- 
sive symptoms of the disease presenting themselves, thus affording 
us many opportunities of observing the state of the lungs in this 
earlier stage of the disease. Nothing satisfactory could be ob- 
tained as to the origin of the disease on this gentleman’s farm. 
Case 21. — Mrs. R., cowkeeper, of Cambridge, who keeps ten 
cows, lost three out of four which were attacked, at various periods 
between May 4 and July 21, 1847, with pleuro-pneumonia. The 
disease in this instance was supposed to have arisen spontaneously. 
Case 22. — Mr. T., a large farmer, purchased, about the middle 
of 1844, nine heifers of a dealer, one of which was shortly after- 
wards attacked with the disease, and, after being attended for 
some time, became considerably reduced, and was sold. The re- 
maining eight were disposed of to a dealer just previous to the 
before-mentioned one becoming affected, four of w r hich were ascer- 
tained to have died shortly after. This was the commencement of 
the disorder upon this farm, and has since made great havoc 
amongst the cattle. Mr. Toller generally keeps from eighty to an 
hundred head of stock on the three farms of which he is proprietor ; 
and during the last three years he has repeatedly been obliged to 
dispose of cows and young stock at a very great disadvantage, on 
account of their becoming diseased. The farms are all contigu- 
ous, so that the cattle have free communication with each other. 
Several were also affected with the vesicular epizootic at the same 
time, and recovered. 
Case 23. — Mr. S. bought forty Irish beasts on December 3, 1846, 
at a market. Soon after, they all became affected with the vesi- 
cular disease, and recovered, except four, which were attacked with 
pleuro-pneumonia. Two were sold, and slaughtered; the others 
recovered. 
Case 24. — Mr. M., of Cambridge, purchased two heifers at 
St. Ives’ market in the beginning of May 1847, one of which was 
observed to cough at the time, and on the 18th of the same month 
was sold and slaughtered, after being treated for nearly a week. 
The other was attacked with the vesicular epizootic at the same 
time, and soon recovered. 
Case 25. — In the month of November 1841, Mr. J. purchased, at 
Stamford fair, fifty-eight head of Irish cattle, and, soon after being 
brought home, most of them were observed to have a dry husking 
