EXTRACTS FROM EXCHANGES. 
589 
course of the disease, the proprietor infected the remainining 
cows with the toxic frothy discharge of the sick ones. 
Among the latter were the two dosed with the potassium 
iodide. All the cows contracted the disease in a mild form, 
with the exception of five which showed severe symptoms. 
But the two iodized cows, although in the midst of the 
sick ones and although infected in the same way, remained 
immune. The effect of iodide of potash is analagous to that 
in the human subject. In a few days the symptoms of acute 
iodism showed themselves, viz., increased nasal secretion 
and salivation, appetite not diminished, thirst increased. In 
a few days the symptoms ameliorate, and then remain station¬ 
ary during the period of the potassium iodide administration. 
The secretion of milk is increased and remains so to the end 
of the administration of the potassium iodide. The cows give 
16 to 18 litres instead of 11 to 13, inasmuch as they take more 
water. 
One cannot say what the value of this one observation 
is, nor how long immunity lasts, nor whether iodide of potash 
has a healing influence in foot and mouth disease. In any 
case the above fact is worthy of notice. 
It would be desirable if veterinarians and the owners of 
cattle could make occasional trials, since it is important to 
substantiate the value of the iodide of potash in this disease. 
Ocst. Monatschr. f. Thierhlk . 
ALOPECIA IN A CALF. 
A five-weeks-old calf, normally covered with hair at birth, 
became hairless and bald during the course of eight days, 
with the exception of small areas on the back, feet, tail and 
ears. Even here the hairs could easily be extracted. With 
this condition the animal was very lively, did not freeze, and 
had a good appetite. 
It was covered with blankets, and a salve consisting of 150 
g. of lard, 40 g. of tincture of cantharides, 5 g. of creolin 
rubbed in, with which the body was treated in ten different 
; parts. In fourteen days a greyish red down showed itself 
