sely. There is no part of them which has a common
perception, excepting the middle of the connecting cord, and a space
near it. When a pointed instrument is applied precisely to the middle
of the cord, it is felt by both, and also for about an inch on each
side; beyond which the impression is limited to the individual of the
side touched.

"In the function of the circulation there is a remarkable uniformity
in the two bodies. The pulsations of the hearts of both coincide
exactly under ordinary circumstances. I counted seventy-three
pulsations in a minute while they were sitting--counting first in one
boy and then in the other; I then placed my fingers on an arm of each
boy, and found the pulsations take place exactly together. One of them
stooping suddenly to look at my watch, his pulse became much quicker
than that of the other; but after he had returned to his former
posture, in about a quarter of a minute his pulse was precisely like
that of the other; this happened repeatedly. Their respirations are,
of consequence, exactly simultaneous."

Dr. Warren next starts a question as to their moral identity, and
says--"There is no reason to doubt that the intellectual operations
of the two are as perfectly distinct as those of any two individuals
who might be accidentally confined together. Whether similarity of
education, and identity of position as to external objects, have
inspired them with any extraordinary sameness of mental action, I am
unable to say--any farther, at least, than that they seem to agree
in their habits and tastes." The concluding observation is on their
separation, which we may remark, appears to be to them a painful
subject; for whenever it is mentioned, they weep bitterly. Dr. Warren
thinks an attempt to cut the cord, or separate them, would be attended
with danger, though not necessarily fatal, and as they are happy in
their present state, he reasonably enough thinks such an operation
uncalled for. "Should one die before the other," adds he, "they should
be cut apart immediately." He, however, quotes a case from Ambrose
Pare, of two girls united by the forehead, one of whom died at ten
years of age, when a separation was made; and the wound of the
surviving girl soon proved fatal.

From the report of Drs. Mitchill and Anderson, we collect their
opinion that the band which joins these boys, has a canal with a
protrusion of viscera from the abdomen of each boy, upon every effort
of coughing or ot