orking at the broth by means of
some special pepsine and each taking his own mouthfuls of it. In
consequence of this method, which first converts the food into a
liquid, the Glow-worm's mouth must be very feebly armed apart from the
two fangs which sting the patient and inject the anaesthetic poison and
at the same time, no doubt, the serum capable of turning the solid
flesh into fluid. Those two tiny implements, which can just be examined
through the lens, must, it seems, have some other object. They are
hollow, and in this resemble those of the Ant-lion, who sucks and
drains her capture without having to divide it; but there is this great
difference, that the Ant-lion leaves copious remnants, which are
afterwards flung outside the funnel-shaped trap dug in the sand,
whereas the Glow-worm, that expert liquifier, leaves nothing, or next
to nothing. With similar tools, the one simply sucks the blood of his
prey and the other turns every morsel of his to account, thanks to a
preliminary liquefaction.

And this is done with exquisite precision, though the equilibrium is
sometimes anything but steady. My rearing-glasses supply me with
magnificent examples. Crawling up the sides, the Snails imprisoned in
my apparatus sometimes reach the top, which is closed with a glass
pane, and fix themselves to it with a speck of glair. This is a mere
temporary halt, in which the Mollusc is miserly with his adhesive
product, and the merest shake is enough to loosen the shell and send it
to the bottom of the jar.

Now it is not unusual for the Glow-worm to hoist himself up there, with
the help of a certain climbing-organ that makes up for his weak legs.
He selects his quarry, makes a minute inspection of it to find an
entrance-slit, nibbles at it a little, renders it insensible and,
without delay, proceeds to prepare the gruel which he will consume for
days on end.

When he leaves the table, the shell is found to be absolutely empty;
and yet this shell, which was fixed to the glass by a very faint
stickiness, has not come loose, has not even shifted its position in
the smallest degree: without any protest from the hermit gradually
converted into broth, it has been drained on the very spot at which the
first attack was delivered. These small details tell us how promptly
the anaesthetic bite takes effect; they teach us how dexterously the
Glow-worm treats his Snail without causing him to fall from a very
slippery, vertical support and wi