ject.

"On the 26th the experiments were again repeated on the couched
eye. It was now found that the boy, on looking at any one of the
cards in a good light, could tell the form nearly as readily as
the color."

From these two instructive cases Home concludes:

"That, where the eye, before the cataract is removed, has only
been capable of discerning light, without being able to
distinguish colors, objects after its removal will seem to touch
the eye, and there will be no knowledge of their outline, which
confirms the observations made by Chesselden.

"That where the eye has previously distinguished colors, there
must also be an imperfect knowledge of distances, but not of
outline, which, however, will be very soon acquired, as happened
in Ware's cases. This is proved by the history of the first boy,
who, before the operation had no knowledge of colors or
distances, but after it, when his eye had only arrived at the
same state that the second boy's was in before the operation, he
had learned that the objects were at a distance and of different
colors.

"That when a child has acquired a new sense, nothing but great
pain or absolute coercion will prevent him from making use of
it."

VI. THE WARDROP CASE.

James Wardrop reports ("Philosophical Transactions of the Royal Society
for 1826," iii, 529-540, London, 1826):

"A girl who was observed, during the first months of her
infancy, to have something peculiar in the appearance of her
eyes and an unusual groping manner which made her parents
suspect that she had defective vision, had an operation
performed on both eyes at the age of about six months. The right
eye was entirely destroyed in consequence. The left eye was
preserved, but the child could only distinguish a very light
from a very dark room without having the power to perceive even
the situation of the window through which the light entered,
though in sunshine or in bright moonlight she knew the direction
from which the light emanated. In this case no light could reach
the retina except such rays as could pass through the substance
of the iris. Until her forty-sixth year the patient could not
perceive objects and had no notion of colors. On the 26th of
January I introduced a very small needle through the cornea and
the center of the iris; but I could not des