CHAPTER XXI

BUTTERFLIES

OH, how beautiful! Oh, my goodness, how beautiful they are! There are

some whose wings are barred with red on a garnet background; some bright

blue with black circles; others are sulphur-yellow with orange spots;

again others are white fringed with gold-color. They have on the

forehead two fine horns, two antennæ, sometimes fringed like an

aigrette, sometimes cut off like a tuft of feathers. Under the head they

have a proboscis, a sucker as fine as a hair and twisted into a spiral.

When they approach a flower, they untwist the proboscis and plunge it to

the bottom of the corolla to drink a drop of honeyed liquor. Oh, how

beautiful they are! Oh, my goodness, how beautiful they are! But if one

manages to touch them, their wings tarnish and leave between the fingers

a fine dust like that of precious metals.

Now their uncle told the children the names of the butterflies that flew

on the flowers in the garden. “This one,” said he, “whose wings are

white with a black border and three black spots, is called the cabbage

butterfly. This larger one, whose yellow wings barred with black

terminate in a long tail, at the base of which are found a large rust

colored eye and blue spots, is called the swallow-tail. This tiny one,

sky-blue above, silver-gray underneath, sprinkled with black eyes in

white circles, with a line of reddish spots bordering the wings, is

called the Argus.”

And Uncle Paul continued thus, naming the butterflies that a bright sun

had drawn to the flowers.

“The Argus ought to be difficult to catch,” observed Emile. “He sees

everywhere; his wings are covered with eyes.”

[Illustration: Female and Male Cabbage Butterfly]

“The pretty round spots that a great many butterflies have on their

wings are not really eyes, although they are called by that name; they

are ornaments, nothing more. Real eyes, eyes for seeing, are in the

head. The Argus has two, neither more nor fewer than the other

butterflies.”

“Claire tells me,” said Jules, “that butterflies come from caterpillars.

Is it true, Uncle?”

“Yes, my child. Every butterfly, before becoming the graceful creature

which flies from flower to flower with magnificent wings, is an ugly

caterpillar that creeps with effort. Thus the cabbage butterfly, which I

have just shown you, is first a green caterpillar, which stays on the

cabbages and gnaws the leaves. Jacques will tell you how much pains he

takes to protect his cabbage patch from the voracious insect; for, you

see, caterpillars have a terrible appetite. You will soon learn the

reason.

“Most insects behave like caterpillars. On coming out of the egg, they

have a provisional form that they must replace later by another. They

are, as it were, born twice: first imperfect, dull, voracious, ugly;

then perfect, agile, abstemious, and often of an admirable richness and

elegance. Under its first form, the insect is a worm called by the

general name of _larva_.

“You remember the lion of the plant-lice, the grub that eats the lice of

the rosebush and, for weeks, without being able to satisfy itself,

continues night and day its ferocious feasting. Well, this grub is a

larva, that will change itself into a little lace-winged fly, the

_hemerobius_, whose wings are of gauze and eyes of gold. Before becoming

the pretty red ladybird with black spots, this pretty insect, which, in

spite of its innocent air, crunches the plant-lice, is a very ugly worm,

a slate-colored larva, covered with little points, and itself very fond

of plant-lice. The June bug, the silly June bug, which, if its leg is

held by a thread, awkwardly puffs out its wings, makes all preparations,

and starts out to the tune of ‘Fly, fly, fly!’ is at first a white worm,

a plump larva, fat as bacon, which lives under-ground, attacks the roots

of plants, and destroys our crops. The big stag-beetle, whose head is

armed with menacing mandibles shaped like the stag’s horns, is at first

a large worm that lives in old tree-trunks. It is the same with the

capricorn, so peculiar for its long antennæ. And the worm found in our

ripe cherries, which is so repugnant to us, what does it become? It

becomes a beautiful fly, its wings adorned with four bands of black

velvet. And so on with others.

[Illustration: Red-humped Apple Tree “Caterpillar” (_a_) moth; (_b_)

caterpillar natural size]

“Well, this initial state of the insect, this worm, first form of youth,

is called the larva. The wonderful change which transforms the larva

into a perfect insect is called metamorphosis. Caterpillars are larvæ.

By metamorphosis they turn into those beautiful butterflies whose wings,

decorated with the richest colors, fill us with admiration. The Argus,

now so beautiful with its celestial blue wings, was first a poor hairy

caterpillar; the splendid swallow-tail began by being a green

caterpillar with black stripes across it and red spots on its sides. Out

of these despicable vermin metamorphosis has made those delightful

creatures which only the flowers can rival in elegance.

“You all know the tale of Cinderella. The sisters have left for the

ball, very proud, very smart. Cinderella, her heart full, is watching

the kettle. The godmother arrives. ‘Go,’ says she, ‘to the garden and

get a pumpkin.’ And behold, the scooped-out pumpkin changes under the

godmother’s wand, into a gilded carriage. ‘Cinderella,’ says she again,

‘open the mouse-trap.’ Six mice run out of it, and are no sooner touched

by the magic wand than they turn into six beautiful dappled-gray horses.

A bearded rat becomes a big coachman with a commanding mustache. Six

lizards sleeping behind the watering-pot become green bedizened footmen,

who immediately jump up behind the carriage. Finally the poor girl’s

shabby clothes are changed to gold and silver ones sprinkled with

precious stones. Cinderella starts for the ball, in glass slippers. You,

apparently, know the rest of it better than I.

“These powerful godmothers for whom it is play to change mice into

horses, lizards into footmen, ugly clothes into sumptuous ones, these

gracious fairies who astonish you with their fabulous prodigies, what

are they, my dear children, in comparison with reality, the great fairy

of the good God, who, out of a dirty worm, object of disgust, knows how

to make a creature of ravishing beauty! He touches with his divine wand

a miserable hairy caterpillar, an abject worm that slobbers in rotten

wood, and the miracle is accomplished: the disgusting larva has turned

into a beetle all shining with gold, a butterfly whose azure wings would

have outshone Cinderella’s fine toilette.”

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The Story-book of Science · 第 21 / 80 章