DISEASES AND TREATMENT OF CATTLE 387 
make her water within twelve hours after injecting the bag, 
take it away by means of a catheter — an instrument for this 
purpose. 
This is done by passing the point of the catheter, guided 
by the finger, along the bottom part of the vulva about four 
inches in, where there is a small opening. Into this pass the 
catheter gently downward and forward until the water comes 
through it. Guarding the opening mentioned is a little valve, 
and sometimes by slipping the finger in and raising the valve 
the water will come without using the catheter. Do this 
twice a day if necessary. 
Four hours after injecting the bag if she is not showing 
signs of recovery, milk her out and repeat the same injection 
into the bag. Repeat this every four hours until the milk 
returns and she shows signs of recovery in other ways. 
During treatment ofifer her frequently small drinks of 
cold water and gruels. Milk often until she is well. 
When recovering give a small quantity of such foods as 
she seems to relish best and leave the calf with her for a 
week or so. If the cow is not going to recover the paralysis 
becomes more marked. She becomes dull and quiet, which 
is followed by a delirious state before death. 
Another treatment which we recommend highly is as 
follows: Inject air into the bag instead of using iodide of 
potassium and water. A special instrument is made for this 
purpose. All that is necessary is to insert it into the teat 
and pump air into the udder (bag). The air becomes ster- 
ilized while passing through the instrument. Pump the bag 
as full as possible without causing it injury. It may be 
necessary to tie the end of the teat with a soft cord to pre- 
vent the air from escaping when the instrument is removed. 
In four hours milk the air out and repeat the operation. Do 
this every four hours until better. 
After using sterilized air follow the same course of after 
treatment as when using iodide of potassium. 
For milk fever instruments refer to the appended adver- 
tisement. They should be kept on hand by every stockman, 
ctipecially such as keep a number of milking cows. The small 
cost of these as well as many others that may be used suc- 
cessfully with but little experience is a mere trifle compared 
to that of a valuable animal the life of which may be saved 
by their timely use. 
