302 



STRUCTURE OF EYE. 



3. The severed muscles of the eyeball, a mass of fat 

 which forms a cushion for the eye, and other tissue, should 

 be trimmed away, leaving the Optic Nerve. 



4. Place the eye in its natural position, and make draw- 

 ings of it, as seen from the front and from one side, naming 

 the parts. 



Ciliary Muscle 



Optic Nerve Choroid 



Fig. 89. Horizontal Section of Right Eye. 



Dissection of the Eye. Each member of the class 

 should have an eye to dissect. To supply a large class it is 

 best to send to a slaughtering-house in the nearest large city. 

 If the eye muscles and other external parts have already 

 been studied, it will not be necessary to remove the muscles 

 and fat around the eye ; in fact, they may well be left un- 

 touched, as they serve as a cushion to support the eye during 

 dissection. The eye may conveniently be dissected on a 



