374 VETERINARY LECTURES 



sulphate of magnesia or hyposulphite of soda dissolved in a pail of 

 cold water, cold hay-tea, or milk and water, placed in front of the 

 patient in such a position that it can suck in the fluid at its leisure. 

 Repeat this daily if necessary, and, if required, warm water injections 

 containing i to 2 ounces of glycerine can be given three or four times 

 in the twenty-four hours. All solid food should be withheld until the 

 animal is so far convalescent as to be able to assimilate such food ; 

 then well-boiled barley and bran are strongly recommended, with 

 green food (if it can be had), carrots, etc. It usually takes from six 

 to eight weeks before recovery can be boasted of. A preparation 

 known as anti-tetanus serum is thought by some to be of great 

 value, both as a remedial and a preventive agent, injected under the 

 skin at the lower portion of the neck. 



THE EYE. 



620. The Eye, or organ of vision, is of globular shape, and con- 

 sists of a nbro-membranous sac that contains transparent humours 

 of different densities, which act as refractors. It is attached to its 

 bony socket by various muscles, and sustained in a steady position 

 by a cushion or pad of fat. This pad, in old age, becomes absorbed, 

 and the upper portion of the eye sinks. 



621. Protecting the front of the eye we have two movable cur- 

 tains — the upper and lower eyelids — the upper being the larger and 

 more movable of the two. The eyelids (Plate XXXIX., A. 5) are 

 composed of — 



1. The skin, found externally. 



2. Muscular fibres, to control their movements. 



3. The tarsal cartilage, to give stiffness and shape. 



4. The conjunctiva (Plate XXXIX., B. 1 , 1), or mucous lining, 



which is also reflected over the front of the eye, or 

 cornea. 



