ON THE SPAYING OF COWS. 
oOl 
Case I .—^lay 1832. I operated on a cow that was in a state 
of rapid emaciation. She did not yield any milk, but she quickly 
regained her ordinary habits and good condition. 
Case II .—June 28^A, 1833. I operated on a cow of M. 
Francillon-Michaud, a distinguished and zealous agriculturist, 
residing near Lausanne. This cow, six years old, gave, in the 
preceding years, eight pots of milk soon after calving, and, during 
part of the summer, six pots*. After the operation she yielded, 
when at grass, nine pots; and, when fed on hay, seven pots. 
M. Manchillon has averaged her produce of milk during twenty- 
eight months at six pots and a quart per day. After that time 
she began to get very fat, still however yielding four pots of milk 
every day. She was sent to the butcher in October 1835, being 
then in excellent condition. 
Case III.—Encouraged by this success, M. Francolin begged 
me to operate on a second cow', of tlie Schwytz breed, thirteen 
or fourteen years old, and that hud had eight calves. She 
yielded, soon after calving, twelve pots of milk per day. The 
average quantity of milk during the preceding years had been 
about eight pots per day. This cow was submitted to the ope¬ 
ration on the 18th of November, 1833, thirty-three days after she 
had produced two calves. She had suffered very much in the 
calving, and there was a muco-purulent discharge from the vulva 
when I operated. She seemed to suffer very little from the ope¬ 
ration. She produced while she was at grass eleven pots of milk 
per day, and gave on an average seven pots and three-quarters 
per day. After this time she began to get fat on her ordinary 
food ; still, however, continuing to give six pots of milk daily. 
In March 18*36, she was sent to the butcher in the best condi¬ 
tion, and sold for one-third more than her owner had calculated 
uj)on. 
Case IV.—A cow, eleven years old, and that had had eight 
calves, was spayed on the 24th of December, 1833. She yielded 
immediately after her calving ten pots of milk. During the 
winter she yielded seven pots; and during the following summer, 
and while she was supplied with green food, from seven and a 
half pots to eight daily. She has given on the average during 
fifteen months six pots of milk per day. She then began to get 
fat, after which she yielded four ])ots a-day; and on the 30th of 
April, 1835, she w-as delivered to the butcher in the highest state 
coiullt ion. 
Case V.—On the 6th of January, 1834, I operated on a young 
cow, three years and a half old, thirty-three days after she had 
A pot 15 equal to 45 oz., or rather more lliau '21 pints. 
