24 SPECIAL CATTLE THERAPY 



layer of granular cells has been thoroughly shaved off, 

 no attempt should be made to remove the band of 

 white tissue just named. We do not disturb this with 

 the knife, but submit it to a thorough cauterization 

 with a solution of bichlorid of mercury, five grains to 

 an ounce of distilled water. This cauterization is per- • 

 formed with a very small, firmly rolled cotton swab ; 

 it is dipped into the solution until saturated, after ' 

 which most of the solution is squeezed out so that the 

 swab is just nicely moist. This is done to prevent any 

 superfluous solution from running over the healthy 

 cornea. The swab so prepared is held and drawn over 

 the entire band of white tissue, using moderate pres- 

 sure and repeating the process seven or eight times, 

 using a fresh swab each time. When the swabbing has 

 been completed the parts should have a dry, woolly 

 appearance. 



The cow is allowed to revive from the chloroform 

 and nothing further done for tAventy-four hours, at 

 the end of which time daily applications of a four per 

 cent yellow oxid of mercury ointment are begun, plac- 

 ing a small piece of the ointment betw^een the lids only. 

 After a week these applications are made every other 

 day, until another week has elapsed. They may then 

 be discontinued and the case usually considered cured. 



An opaque area will remain in the vicinity of the 

 original lesion. 



When the disease has been allowed to progress until 

 there are several thicknesses of granulation tissue and 

 the eye is discharging a muco-purulent fluid the above 

 treatment is of no avail. If it is demanded that some- 

 thing be done the surgeon should advise a complete 

 enucleation of the eye and its adnexa. The sooner 

 this operation is undertaken the better. We do not 

 advise enucleation unless the animal is especially valu- 



