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day of work, when he again presented the same symptoms. No 
treatment was attempted, beyond taking precautions to prevent 
his hurting himself against the wall and sides of his stall. A few 
days later, a sudden change occurred; he stopped pushing against 
the wall, but showed the most marked symptoms of immobility. 
By a long rest of three weeks he seemed to improve sufficiently 
to be able to resume light work, but the day following the symp¬ 
toms reappeared, followed by those of immobility. This condi¬ 
tion continued until the animal was destroyed. At the post¬ 
mortem, two tumors of the choroid plexuses were found, of the 
size of a flattened walnut, one in each ventricle. There seemed 
to be no atrophy of the optic layers, or of the corpora striata, 
only a small quantity of fluid of a citrine color. These tumors 
were formed of crystals of cholesterine, with an abundant pro¬ 
liferation of the cellular and vascular elements.— Ibid. 
DYSTOKIA—CALF WITH TWO HEADS. 
By M. Marlot, Jr. 
This is the case of a primipara cow which had for several 
hours violent pains without being able to deliver. On examina¬ 
tion, it was found that the foetus seemed to be dead, and has his 
two hind legs protruding outwards. These being secured with 
ropes, strong traction was made upon them, but the delivery was 
still prevented. Embryotomy was performed, all the internal 
viscera removed, and the transversal section of the body was made. 
An attempt to change the position of the foetus gave to the hand 
the feeling of one head, and on the opposite side of a pair of ears 
belonging to a second. The remains of the trunk being secured 
with ropes, and stronger tractions put upon them, the two heads, 
which are connected in T form at the extremity of the neck— 
which is represented by the long branch of the T—approached 
closer to each other, and resumed their horizontal position, when 
the mass was extracted from the vaginal canal. Both are per¬ 
fectly formed, of equal size, the same color, and perfectly alike. 
There was but one vertebral column, and only one spinal marrow, 
