216 
CORRESPONDENCE. 
evolved for such purpose are patronized. To conclude other¬ 
wise is to reject the foundation principle of all live-stock im¬ 
provement. 
CORRESPONDENCE. 
PRACTICAL HINTS ON SCHMIDT’S TREATMENT OF PARTURIENT 
PARESIS OF COWS. 
Editors American Veterinary Review : 
Dear Sirs :—The season of milk-fever being again at hand, 
I have of late received numerous letters asking information in 
regard to the iodide of potassium treatment. While I am greatly 
pleased to thus hear from so many former pupils, friends and 
even strangers, yet I find myself unable to reply to all of these 
letters in the manner I would like to do or as the questioners 
have a right to expect. I take, therefore, this means to convey 
the desired information. 
1. The infusion-apparatus as described in the December 
(1898) issue of the Review, page 583, can, of course, be con¬ 
structed at home. Yet there seem to be doubts as to the qual¬ 
ity of the rubber-tube, the kind of milking-tube, etc. In order 
to be practical I have consulted with Messrs. J. Reynders & Co., 
303 Fourth Avenue, New York City, and they have constructed 
a very useful apparatus of good material for $1.25, which they 
are ready to ship on receipt of order. 
2. The dose of iodide of potassium is 7 to 10 grammes=io5 
to 150 grains, according to size and weight of cow; one-half 
this dose may be repeated within eight hours if no effect is visi¬ 
ble from the first infusion. 
3. The preparation of the solution is of the greatest import¬ 
ance. The idea is to make the solution aseptic,-/. free from 
any germs by which the udder may become infected internally, 
which surely will result in mastitis (garget). Usually there is 
no difficulty in being supplied with clean boiling water in a 
house kitchen. I allow the boiled water to stand for a time to 
settle, then slowly pour it through filter-paper into a pint bottle 
(salt-mouth) containing the iodide of potassium. The bottle has 
been sterilized at home and closed with disinfected cotton. As 
soon as the solution has cooled to body temperature (100 F.) it 
is ready for infusion. In the meantime I have the udder thor¬ 
oughly milked, washed with soap and water, and disinfect it my¬ 
self, especially the teats. For this purpose I prefer creolin (Pear- 
