softness than that any hardness or thickness
of the cuticle existed, either naturally
or from mechanical causes. Nor was there
any circumstance to indicate that the
person had been previously rubbed with any
matter capable of resisting the operation
of the agents with which he was brought
in contact.

This man bathed for the space of five
minutes, and without any injury to his
sensibility or the surface of the skin, his
legs in oil, heated at 97 degrees of Reaumur (250
degrees of Fahrenheit) and with the same
oil, at the same degree of heat, he washed
his face and superior extremities. He
held, for the same space of time, and with
as little inconvenience, his legs in a
solution of muriate of soda, heated to 102 of
the same scale, (261 1/2 degrees Fahr.) He stood
on and rubbed the soles of his feet with a
bar of hot iron heated to a white heat; in
this state he held the iron in his hands and
rubbed the surface of his tongue.

He gargled his mouth with concentrated
sulphuric and nitric acids, without
the smallest injury or discoloration; the
nitric acid changed the cuticle to a yellow
color; with the acids in this state he