ent the shower so dear to the able-bodied Mollusc. In
about a couple of days, my prisoner, but lately injured by the
Glow-worm's treachery, is restored to his normal state. He revives, in
a manner; he recovers movement and sensibility. He is affected by the
stimulus of a needle; he shifts his place, crawls, puts out his
tentacles, as though nothing unusual had occurred. The general torpor,
a sort of deep drunkenness, has vanished outright. The dead returns to
life. What name shall we give to that form of existence which, for a
time, abolishes the power of movement and the sense of pain? I can see
but one that is approximately suitable: anaesthesia. The exploits of a
host of Wasps whose flesh-eating grubs are provided with meat that is
motionless though not dead have taught us the skilful art of the
paralysing insect, which numbs the locomotory nerve-centres with its
venom. We have now a humble little animal that first produces complete
anaesthesia in its patient. Human science did not in reality invent
this art, which is one of the wonders of latter-day surgery. Much
earlier, far back in the centuries, the Lampyris and, apparently,
others knew it as well. The animal's knowledge had a long start of
ours; the method alone has changed. Our operators proceed by making us
inhale the fumes of ether or chloroform; the insect proceeds by
injecting a special virus that comes from the mandibular fangs in
infinitesimal doses. Might we not one day be able to benefit from this
hint? What glorious discoveries the future would have in store for us,
if we understood the beastie's secrets better!

What does the Lampyris want with anaesthetical talent against a
harmless and moreover eminently peaceful adversary, who would never
begin the quarrel of his own accord? I think I see. We find in Algeria
a beetle known as Drilus maroccanus, who, though non-luminous,
approaches our Glow-worm in his organization and especially in his
habits. He, too, feeds on Land Molluscs. His prey is a Cyclostome with
a graceful spiral shell, tightly closed with a stony lid which is
attached to the animal by a powerful muscle. The lid is a movable door
which is quickly shut by the inmate's mere withdrawal into his house
and as easily opened when the hermit goes forth. With this system of
closing, the abode becomes inviolable; and the Drilus knows it.

Fixed to the surface of the shell by an adhesive apparatus whereof the
Lampyris will presently show us the equ