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Wor EX. TRENTON, N. J., DECEMBER, 1889. No. 12. 
THE MINUTE STRUCTURE OF THE CORNEA. 
iG 
THE SO-CALLED CELLS OF THE CORNEA. 
C. HEITZMAN, M. D. 
WITH PLATE XII. % 
N order to obtain specimens suitable for the study of the mi- 
nutest anatomical features of the cornea, one must sacrifice 
a cat, immaterial of what age. I do not think the harm done 
either to the useful domestic feline, or to the individual victim- 
ized, is very great. A cat, though possessed of nine lives, is 
killed rapidly and painlessly in either of two ways: by strangu- 
lation or by chloroform. If we resort to the former rather inex- 
pensive procedure, we have to take a strong, long rope, one end 
of which is fastened to the knob of the door, its middle being 
transformed into a loop, apphed around the neck of the cat and 
the other end held in the hand. It is important to take a long 
rope, since the cat, as any other creature, is not willing to enter. 
Hades without a struggle, and might, with her claws, do severe 
injury to the scientist, if within reach of his body. The second 
and nicest, though somewhat expensive way to kill a cat is to 
place her under a large bell-glass and to put under the same a 
cup holding a sponge saturated with chloroform. At first the 
