perceptible undulatory movement could be detected. The patient had, in
fact, what is known as a tremulous iris, a condition that is seen in
cases where the crystalline lens has been extracted for the cure of
cataract, or where it has become accidentally displaced, leaving the
iris unsupported. In the present case, the complete condition of the
iris made it clear that the ordinary extraction operation had not been
performed, nor was I able, on the closest inspection with the aid of my
lens, to find any trace of the less common "needle operation." The
inference was that the patient had suffered from the accident known as
"dislocation of the lens"; and this led to the further inference that he
was almost or completely blind in the right eye.

This conclusion was, indeed, to some extent negatived by a deep
indentation on the bridge of the nose, evidently produced by spectacles,
and by marks which I looked for and found behind the ears, corresponding
to the hooks or "curl sides" of the glasses. For those spectacles which
are fitted with curl sides to hook over the ears are usually intended to
be worn habitually, and this agreed with the indentation on the nose;
which was deeper than would have been accounted for by the merely
occasional use of spectacles for reading. But if only one eye was
useful, a single eye-glass would have answered the purpose; not that
there was any weight in this objection, for a single eye-glass worn
constantly would be much less convenient than a pair of hook-sided
spectacles.

As to the nature of the patient's illness, only one opinion seemed
possible. It was a clear and typical case of opium or morphine
poisoning. To this conclusion all his symptoms seemed to point with
absolute certainty. The coated tongue, which he protruded slowly and
tremulously in response to a command bawled in his ear; his yellow skin