508 
CORRESPONDENCE. 
the class. I wish to apologize for not sending better prepared 
specimens, but the post mortem was made between half past fOm¬ 
an d live in the afternoon, and in an open field, with the thermo¬ 
meter on the road to zero, and with every prospect of soon getting 
there; consequently the knife and axe flew. 
These specimens were from a Guernsey cow of imported stock, 
and I will endeavor to give you as full a history of her case as 
possible, because she showed so many of the characteristic symp¬ 
toms of the disease, which you will find so well marked in the 
specimen. 
This cow came from Philadelphia, where she was purchased at 
an auction sale some two years ago, with several others (four, I 
believe). She was placed on the farm, and has had the same care 
that the rest of the cattle have had, until within the last two 
months. A few months after being brought here she aborted. 
When the first period of oestrum came round after the abortion, 
she was not sent to the bull; when the second period came on 
she was served by an Ayrshire bull that got loose in the barn and 
found her out. Since this time of service she has neither been in 
heat, nor had a calf, nor has she aborted again, so far as I can 
find out; and these cattle are constantly under careful supervision. 
I saw her first November 8th, 1882, at which time the owner asked 
me to see if I could discover any reason why she should not be¬ 
come pregnant, and gave me the preceding history. I made an 
examination, and could find nothing in the way of growth or mal¬ 
formation, to account for the trouble. I suggested a change of 
bull, and as the cow was in good condition, no medicine. 
At the same visit I examined three other Guernseys which had 
just come from Philadelphia, where they had been kept since their 
importation in the spring. One of these had a slight cough, but 
as there were no other signs of disease, I laid it to a change of 
location and lack of acclimatization of these animals. You may 
hear further at another time. In fact, I was called to see the one 
with the cough, December 20tli, and the subject of this letter was 
incidentally shown to me as being lame. When the owner first 
showed me the cow, he told me that of the cows that came with 
this one, all had died with tuberculosis. Hence, I was at once 
