524 
JOHN J. REPP. 
an easy birth, although Schmidt cites this circumstance m sup¬ 
port of his theory. 
The table would indicate that one may look for this disease 
most commonly within the first 24 hours after the calf is born. 
In one case, however, it had its onset before parturition ; in 
others, after the first day. 
The table shows that the infusion of potassium iodide into 
the udder was repeated in the course of eight to twelve hours in 
22 cases, and was repeated twice in two cases. Of the 22 cases 
which received two doses each, 7 were fatal, two having had re¬ 
lapses and one pneumonia. There is no means of learning from 
the reports just what the second or the third dose contributed 
toward the cure of the disease, but as all these cases were severe 
ones and the repetition of the dose was strongly indicated, it 
may be inferred that it is good practice to* repeat the dose in 
eight to twelve hours, provided the cow has not then responded 
to previous treatment. I think it may be safely concluded that 
20 or even 30 grammes of potassium iodide injected into the 
udder within twenty-four hours will not do harm, but on the 
other hand may contribute largely toward the cure of the case. 
It would not be advisable, however, to repeat the dose if the 
cow has responded to the first one. 
It appears from the table that one may expect the cow to 
have pretty well recovered from her attack within 12 hours after 
the treatment is administered, although some cases do not yield 
so soon. A relapse may be expected at any time and it would 
seem that this renders the prognosis very grave. 
Pneumonia is a very grave complication. None of the six 
cows in which this complication arose recovered. This leads to 
an inquiry into the cause of the pneumonia. It may be due to 
dust or particles inhaled during the attack, but is most likely 
set up in most cases by the entrance into the lungs of drenches 
designed for the stomach, but failing to reach their destination 
on account of the inability to swallow. This would lead me to 
recommend that no medicines be given by the mouth while the 
animal is unable to swallow, unless given by means of the pro- 
