Note 37 — THE PEAK IN DARIEN: THE RIDDLE OF DEATH.

There is an insect, the Lunar Sphinx Moth, which exhibits, in its first stage, not only the usual prevision for its security while in the helpless chrysalis state, but a singular foresight of its own requirements when it shall have become a winged moth. Having made, by eating its way upward through the pith of a willow, an appropriate hiding-place, it finds itself with its head in a position in which, were it to become a moth, it could never push itself down, and escape at the aperture below. The little creature accordingly, before it goes to sleep, laboriously turns round, and places its head near the entrance, where, as a moth, it will make its happy exit into the fields of air. There seems something curiously akin in the unaccountable foresight of this insect, of a state of existence it has never experienced, and the vague and dim sentiment of immortality, common to mankind since the days of the cave-dwellers of the Stone Age.