o54 DISEASES OF CATTLE. 



is advisable. This, however, must follow very soon after the in- 

 jury — ^before swelling takes place. Divide the outer corner of the 

 eyelid to enlarge the orifice, then by pressure with the fingers of both 

 hands placed upon the sides of the eye the ball may be put into its 

 place. Apply a firm compress over the injured eye and keep it 

 constantly wet with cold water containing 1 dram of sugar of lead to 

 each quart. 



If the attempt at reduction proves unsuccessful the artery at the 

 back of the e3^e should be ligated, and then the whole mass cut off as 

 deep within the orbit as possil)le. The orbital cavity, after washing 

 it out with a 3 per cent solution of carbolic acid or compound cresol, 

 should be packed daily with fresh absorbent cotton. 



INFLAMMATION AND ENLARGEMENT OF THE HAW. 



The haw, or membrana nictitans, is subject to infiammation and 

 sAvelling from the extension of conjunctivitis, or direct injury by for- 

 eign substances. It presents a red, swollen appearance, accompanied 

 with considerable pain and a profuse floAv of tears. A slight scari- 

 fication with a sharp knife and the application of a cooling lotion, 

 such as is recommended for conjunctivitis, will soon reduce the swell- 

 ing and restore it to its normal function. 



There is, however, a tendency for an inflammation of this mem- 

 biane to take on a chronic character, which may eventually result in 

 a permanent enlargement, resembling a tumor. When it attains 

 sufficient size to protrude itself permanently over the eye, or project 

 between the lids so as to obstruct the sight, its removal may become 

 necessar3^ A threaded needle is passed through the bod}'^ of the en- 

 larged mass, by which the membrane is drawn out as far as possible, 

 then with a blimt pair of scissors it may be dissected away from its 

 attachments. The eye is afterwards treated with simple cooling 

 lotions. 



