26o 



hours, at the same time giving one to two oz. 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 one to 

 two oz. of glycerine can be given three or four times in the 24 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, &c. It usually takes from six to eight weeks before recovery 

 can be boasted of. 



THE EYE. 



615. The Eye, or organ of vision, is of globular shape, and consists 

 of a fibro-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. 



616. Protecting the front of the eye, we have two movable curtains, 

 the upper and lower eyelids ; the upper being the larger, and more 

 movable of the two. The Eyelids (Plate XXXVI. , A. 5.) are 

 composed of : — 



I. — The Skin, found externally. 



2.- — ■Muscular fibres, to control their movements. 



3. — The Tarsal cartilage, to give stiffness and shape. 



4. — The Conjunctiva, (Plate XXXVI., B. 1 ., 1 .), or mucous lining, 

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



5. — The Meibomian glands, {Plate XXXVI., A. 10., 10.), which are 

 found on the margin of the eyelids, and secrete an oily material, that 

 prevents them gumming together. 



