al cells receives a newly transformed Cerambyx, such
as my provisions of firewood supply, when split by the wedge, in
October. The two pieces are then joined and kept together with a few
bands of wire. June comes. I hear a scraping inside my billets. Will
the Capricorns come out, or not? The delivery does not seem difficult
to me: there is hardly three-quarters of an inch to pierce. Not one
emerges. When all is silence, I open my apparatus. The captives, from
first to last, are dead. A vestige of sawdust, less than a pinch of
snuff, represents all their work.

I expected more from those sturdy tools, their mandibles. But, as I
have said elsewhere, the tool does not make the workman. In spite of
their boring-implements, the hermits die in my cases for lack of skill.
I subject others to less arduous tests. I enclose them in spacious
reed-stumps, equal in diameter to the natal cell. The obstacle to be
pierced is the natural diaphragm, a yielding partition two or three
millimetres thick. (.078 to .117 inch.--Translator's Note.) Some free
themselves; others cannot. The less vibrant ones succumb, stopped by
the frail barrier. What would it be if they had to pass through a
thickness of oak?

We are now persuaded: despite his stalwart appearance, the Capricorn is
powerless to leave the tree-trunk by his unaided efforts. It therefore
falls to the worm, to the wisdom of that bit of an intestine, to
prepare the way for him. We see renewed, in another form, the feats of
prowess of the Anthrax, whose pupa, armed with trepans, bores through
rock on the feeble Fly's behalf. Urged by a presentiment that to us
remains an unfathomable mystery, the Cerambyx-grub leaves the inside of
the oak, its peaceful retreat, its unassailable stronghold, to wriggle
towards the outside, where lives the foe, the Woodpecker, who may
gobble up the succulent little sausage. At the risk of its life, it
stubbornly digs and gnaws to the very bark, of which it leaves no more
intact than the thinnest film, a slender screen. Sometimes, even, the
rash one opens the window wide.

This is the Capricorn's exit-hole. The insect will have but to file the
screen a little with its mandibles, to bump against it with its
forehead, in order to bring it down; it will even have nothing to do
when the window is free, as often happens. The unskilled carpenter,
burdened with his extravagant head-dress, will emerge from the darkness
through this opening when the summer heats