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he had found most successful, and which had been hitherto 
untried. The results of several experiments performed ac- 
cording to this plan were then read. Ina series of eighteen 
experiments, the iris was injured in ten; the crystalline lens 
escaped in eleven; union took place between the implanted 
portion and the adjacent parts in seventeen, in the space of 
forty-eight hours; in twelve, adhesion of the iris took place 
to some part of the cicatrix; sixteen were restored to imper- 
fect vision ; and in one, slough of the lambeau, and consequent 
destruction of the eye, occurred, the portion of cornea to be 
inserted having been detained half an hour before it was 
attached, in order to try how long it would retain vitality 
sufficient to enable it again to take on a vital action. 
The author made several experiments with iodine, nitrate 
of silver, &c., and found that they were incapable of pro- 
ducing any effect on the milky state of the cornea, although 
they appeared to diminish the extent of the cicatrix ; cor- 
rosive sublimate (in the proportion of from half a grain to 
three grains to the ounce of water) was the only medicinal 
substance tried which had the power of restoring absolute 
clearness to the implanted portion. 
The author then mentioned the various means he had 
employed to produce absorption of the cicatrix, with their 
results ; explained his view of the cases in which this opera- 
tion might be attempted; and concluded by entreating 
those surgeons, who possessed hospitals, not to be too hasty 
in rejecting an operation, which, from the experiments de- 
tailed, and the living subjects exhibited, was. now proved 
to be at least possible. 
Mr. Bigger then made an oral communication on a series 
of experiments in which he was at present engaged, con- 
nected with the operations detailed in his paper.- The 
object of these experiments was the removal of small spots 
of opaque lymph, where they existed in the centre of the 
cornea. The method employed consisted in passing a liga- 
