570 OSSIFICATION OF THE HEPATIC DUCT. 
a considerable quantity of solid ingesta, which had escaped 
through an opening four inches long and two wide in the 
mucous coat, and fourteen inches in the muscular and peri- 
toneal coats. 
I have forwarded the above case, should you deem it 
worthy of insertion in your Journal, as differing somewhat 
from those symptoms generally described, inasmuch as the 
animal never laid down, made no attempts at vomition, nor 
exhibited that marked symptom of sitting on the haunches 
usually met with in these cases. It also shows the necessity 
of regulating the animal’s food after a dose of purgative 
medicine, for there is but little doubt that from the nauseating 
effects of the physic having passed off, and the animal’s 
appetite returned, he had partaken somewhat ravenously of a 
large quantity of food during the night, causing over disten- 
tion of the stomach, which by some sudden exertion on the 
part of the animal had become ruptured. 
OSSIFICATION OF THE HEPATIC DUCT OF A 
COW. 
By J. F. Shaw, M.B.C.V.S., Derby. 
Dear Sirs, — I enclose you a morbid specimen, which I 
think may be interesting to you, particularly when taken in 
connection with the symptoms which presented themselves 
previous to death, which I will hastily sketch for you to make 
what use of you please. 
Being in attendance on a mare, at Burley Farm, on the 
24th ult., my attention was directed to a slight disease exist- 
ing in the udder of a cow, the gland being very tender. The 
cow had been bought but a few days before, and was said to 
have calved about three weeks ago. She gave but a small 
quantity of milk, and was low in condition. With the excep- 
tion of the udder, she did not appear to be labouring under 
any disease. I gave her an aperient draught, and had some 
camphorated ointment rubbed over the mammary gland night 
and morning, when she then appeared to be getting well; 
but on the 30th they sent to say that she was very ill, and the 
bowels constipated. I forwarded a strong purgative, which 
was given to her at night ; and the next morning early, I 
went over to see her, and I must confess I was puzzled what 
to make of her. The pulse was low, the membranes pallid, 
