The Notebooks of Leonardo Da Vinci

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A FABLE.

An oyster being turned out together with other fish in the house of
a fisherman near the sea, he entreated a rat to take him to the sea.
The rat purposing to eat him bid him open; but as he bit him the
oyster squeezed his head and closed; and the cat came and killed
him.

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MAGNANIMITY.

The falcon never seizes any but large birds and will sooner die than
eat [tainted] meat of bad savour.

II.

FABLES.

Fables on animals (1265-1270).

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Moderation checks all the vices. The ermine will die rather than
besmirch itself.

OF FORESIGHT.

The cock does not crow till it has thrice flapped its wings; the
parrot in moving among boughs never puts its feet excepting where it
has first put its beak. Vows are not made till Hope is dead.

Motion tends towards the centre of gravity.

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THE CHAMELEON.

This creature always takes the colour of the thing on which it is
resting, whence it is often devoured together with the leaves on
which the elephant feeds.

THE RAVEN.

When it has killed the Chameleon it takes laurel as a purge.

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THE LIZARD.

This, when fighting with serpents eats the sow-thistle and is free.

THE SWALLOW.

This [bird] gives sight to its blind young ones, with the juice of
the celandine.

THE WEASEL.

This, when chasing rats first eats of rue.

THE WILD BOAR.

This beast cures its sickness by eating of ivy.

THE SNAKE.

This creature when it wants to renew itself casts its old skin,
beginning with the head, and changing in one day and one night.

THE PANTHER.

This beast after its bowels have fallen out will still fight with
the dogs and hunters.

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THE HIPPOPOTAMUS.

This beast when it feels itself over-full goes about seeking thorns,
or where there may be the remains of canes that have been split, and
it rubs against them till a vein is opened; then when the blood has
flowed as much as he needs, he plasters himself with mud and heals
the wound. In form he is something like a horse with long haunches,
a twisted tail and the teeth of a wild boar, his neck has a mane;
the skin cannot be pierced, unless when he is bathing; he feeds on
plants in the fields and goes into them backwards so that it may
seem, as though he had come out.

THE IBIS.

This bird resembles a crane, and when it feels itself ill it fills
its craw with water, and with its beak makes an injection of it.

THE STAG.

These creatures when they feel themselves bitten by the spider
called father-long-legs, eat crabs and free themselves of the venom.

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trochilus, a very small bird, runs at once to its mouth and hops
among its teeth and goes pecking out the remains of the food, and so
inciting it with voluptuous delight tempts it to open the whole of
its mouth, and so it sleeps. This being observed by the ichneumon it
flings itself into its mouth and perforates its stomach and bowels,
and finally kills it.

THE DOLPHIN.

Nature has given such knowledge to animals, that besides the
consciousness of their own advantages they know the disadvantages of
their foes. Thus the dolphin understands what strength lies in a cut
from the fins placed on his chine, and how tender is the belly of
the crocodile; hence in fighting with him it thrusts at him from
beneath and rips up his belly and so kills him.

The crocodile is a terror to those that flee, and a base coward to
those that pursue him.

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THE ICHNEUMON.

This animal is the mortal enemy of the asp. It is a native of Egypt
and when it sees an asp near its place, it runs at once to the bed
or mud of the Nile and with this makes itself muddy all over, then
it dries itself in the sun, smears itself again with mud, and thus,
drying one after the other, it makes itself three or four coatings
like a coat of mail. Then it attacks the asp, and fights well with
him, so that, taking its time it catches him in the throat and
destroys him.

THE CROCODILE.

This is found in the Nile, it has four feet and lives on land and in
water. No other terrestrial creature but this is found to have no
tongue, and it only bites by moving its upper jaw. It grows to a
length of forty feet and has claws and is armed with a hide that
will take any blow. By day it is on land and at night in the water.
It feeds on fishes, and going to sleep on the bank of the Nile with
its mouth open, a bird called

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THE AMPHISBOENA.

This has two heads, one in its proper place the other at the tail;
as if one place were not enough from which to fling its venom.

THE IACULUS.

This lies on trees, and flings itself down like a dart, and pierces
through the wild beast and kills them.

THE ASP.

The bite of this animal cannot be cured unless by immediately
cutting out the bitten part. This pestilential animal has such a
love for its mate that they always go in company. And if, by mishap,
one of them is killed the other, with incredible swiftness, follows
him who has killed it; and it is so determined and eager for
vengeance that it overcomes every difficulty, and passing by every
troop it seeks to hurt none but its enemy. And it will travel any
distance, and it is impossible to avoid it unless by crossing water
and by very swift flight. It has its eyes turned inwards, and large
ears and it hears better than it sees.

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of these, being killed with a spear by one who was on horse-back,
and its venom flowing on the spear, not only the man but the horse
also died. It spoils the wheat and not only that which it touches,
but where it breathes the grass dries and the stones are split.

THE WEASEL.

This beast finding the lair of the basilisk kills it with the smell
of its urine, and this smell, indeed, often kills the weasel itself.

THE CERASTES.

This has four movable little horns; so, when it wants to feed, it
hides under leaves all of its body except these little horns which,
as they move, seem to the birds to be some small worms at play. Then
they immediately swoop down to pick them and the Cerastes suddenly
twines round them and encircles and devours them.

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the same till he gets into his boat.

CATOBLEPAS.

It is found in Ethiopia near to the source Nigricapo. It is not a
very large animal, is sluggish in all its parts, and its head is so
large that it carries it with difficulty, in such wise that it
always droops towards the ground; otherwise it would be a great pest
to man, for any one on whom it fixes its eyes dies immediately.
[Footnote: Leonardo undoubtedly derived these remarks as to the
Catoblepas from Pliny, Hist. Nat. VIII. 21 (al. 32): _Apud Hesperios
Aethiopas fons est Nigris_ (different readings), _ut plerique
existimavere, Nili caput.-----Juxta hunc fera appellatur catoblepas,
modica alioquin, ceterisque membris iners, caput tantum praegrave
aegre ferens; alias internecio humani generis, omnibus qui oculos
ejus videre, confestim morientibus._ Aelian, _Hist. An._ gives a far
more minute description of the creature, but he says that it poisons
beasts not by its gaze, but by its venomous breath. Athenaeus 221 B,
mentions both. If Leonardo had known of these two passages, he would
scarcely have omitted the poisonous breath. (H. MULLER-STRUBING.)]

THE BASILISK.

This is found in the province of Cyrenaica and is not more than 12
fingers long. It has on its head a white spot after the fashion of a
diadem. It scares all serpents with its whistling. It resembles a
snake, but does not move by wriggling but from the centre forwards
to the right. It is said that one

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THE TIGER.

This beast is a native of Hyrcania, and it is something like the
panther from the various spots on its skin. It is an animal of
terrible swiftness; the hunter when he finds its young ones carries
them off hastily, placing mirrors in the place whence he takes them,
and at once escapes on a swift horse. The panther returning finds
the mirrors fixed on the ground and looking into them believes it
sees its young; then scratching with its paws it discovers the
cheat. Forthwith, by means of the scent of its young, it follows the
hunter, and when this hunter sees the tigress he drops one of the
young ones and she takes it, and having carried it to the den she
immediately returns to the hunter and does

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therefore knowing this, it hides its face, and the surrounding
animals grow bold and come close, the better to enjoy the sight of
so much beauty; when suddenly it seizes the nearest and at once
devours it.

CAMELS.

The Bactrian have two humps; the Arabian one only. They are swift in
battle and most useful to carry burdens. This animal is extremely
observant of rule and measure, for it will not move if it has a
greater weight than it is used to, and if it is taken too far it
does the same, and suddenly stops and so the merchants are obliged
to lodge there.

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THE LION.

This animal, which is so terrible, fears nothing more than the noise
of empty carts, and likewise the crowing of cocks. And it is much
terrified at the sight of one, and looks at its comb with a
frightened aspect, and is strangely alarmed when its face is
covered.

THE PANTHER IN AFRICA.

This has the form of the lioness but it is taller on its legs and
slimmer and long bodied; and it is all white and marked with black
spots after the manner of rosettes; and all animals delight to look
upon these rosettes, and they would always be standing round it if
it were not for the terror of its face;

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THE BISON WHICH DOES INJURY IN ITS FLIGHT.

This beast is a native of Paeonia and has a neck with a mane like a
horse. In all its other parts it is like a bull, excepting that its
horns are in a way bent inwards so that it cannot butt; hence it has
no safety but in flight, in which it flings out its excrement to a
distance of 400 braccia in its course, and this burns like fire
wherever it touches.

LIONS, PARDS, PANTHERS, TIGERS.

These keep their claws in the sheath, and never put them out unless
they are on the back of their prey or their enemy.

THE LIONESS.

When the lioness defends her young from the hand of the hunter, in
order not to be frightened by the spears she keeps her eyes on the
ground, to the end that she may not by her flight leave her young
ones prisoners.

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one which had inside it a boy, entire, that it had swallowed.

THE MACLI.--CAUGHT WHEN ASLEEP.

This beast is born in Scandinavia. It has the shape of a great
horse, excepting that the great length of its neck and of its ears
make a difference. It feeds on grass, going backwards, for it has so
long an upper lip that if it went forwards it would cover up the
grass. Its legs are all in one piece; for this reason when it wants
to sleep it leans against a tree, and the hunters, spying out the
place where it is wont to sleep, saw the tree almost through, and
then, when it leans against it to sleep, in its sleep it falls, and
thus the hunters take it. And every other mode of taking it is in
vain, because it is incredibly swift in running.