Quaestiones Naturales

WHETHER is it because (as Laitus thinks) showers, parting the earth by the violence of their fall, make passages, whereby the water may more easily penetrate to the root? Or cannot this be true; and did Laitus never consider that marsh-plants (as cat’s-tail, pond-weeds, and rushes) neither thrive nor sprout when the rains fall not in their season; but it is true, as Aristotle said, rain-water is new and fresh, that of lakes old and stale? And what if this be rather probable than true? For the waters of fountains and rivers are ever fresh, new always arriving; therefore Heraclitus said well, that no man could go twice into the same river. And yet these very waters nourish worse than rain-water. But water from the heavens is light and aerial, and, being mixed with spirit, is the quicker passed and elevated into the plant, by reason of its tenuity. And for this very reason it makes bubbles when mixed with the air. Or does that nourish most which is soonest altered and overcome by the thing nourished?—for this very thing is concoction. On the contrary, inconcoction is when the aliment is too strong to be affected by the thing nourished. Now thin, simple, and insipid things are the most easily altered, of which number is rain-water, which is bred in the air and wind, and falls pure and sincere. But fountain-water, being assimilated to the earth and places through which it passes, is filled with many qualities which render it less nutritive and slower in alteration to the thing nourished. Moreover, that rain-water is easily alterable is an argument; because it sooner putrefies than either spring

When in vine wood the water putrefies,

It turns to wine, while under bark it lies.

Or, which may most readily be assigned for a reason, is it because rain is sweet and mild, when it is presently sent by the wind? For this reason cattle drink it most greedily, and frogs in expectation of it raise their voice, as if they were calling for rain to sweeten the marsh and to be sauce to the water in the pools. For Aratus makes this a sign of approaching rain,

When father frogs, to watery snakes sweet food,

Do croak and sing in mud, a wretched brood.

WHETHER (as many think) to nourish them the more, and fatten them the better? For salt by its acrimony sharpens the appetite, and by opening the passages brings meat more easily to digestion. Therefore Apollonius, Herophilus’s scholar, would not have lean persons, and such as did not thrive, be fed with sweet things and gruel, but ordered them to use pickles and salt things for their food, whose tenuity, serving instead of frication or sifting, might apply the aliment through the passages of the body. Or is it for health’s sake that men give sheep salt to lick, to cut off the redundance of nutriment? For when they are over fat, they grow sick; but salt wastes and melts the fat. And this they observe so well, that they can more easily flay them; for the fat, which agglutinates and fastens the skin, is made thin and weak by the acrimony. The blood also of things that lick salt is attenuated; nor do things within the body stick together when salts are

Is it because they contain much spirit, by reason of their confusion and mixture with the air? And the spirit moving the humor sends it more upwards. Or is it because heat fighting against cold causes thunder and lightning? Whence it is that it thunders very little in winter, but in spring and autumn very much, because of the inequality of temper; and the heat, concocting the humor, renders it friendly and commodious for plants. Or does it thunder and lighten most in the spring for the aforesaid cause, and do the seeds have greater occasion for the vernal rains before summer? Therefore that country which is best watered with rain in spring, as Sicily is, produces abundance of good fruit.

INDEED, at first the olive is bitter, and the grape acid; one whereof afterward turns fat, and the other vinous. But the harshness in dates and the austere in pomegranates turn sweet. Some pomegranates and apples have only a

Is it because a salt taste is never natural, but arises when the rest are corrupt? Therefore such plants and seeds as are nourished receive no nourishment from salt; it serves indeed some instead of sauce, by preventing a surfeit of other nourishment. Or, as men take away saltness and bitingness from the sea-water by distilling, is saltness so abolished in hot things by heat? Or indeed does the taste (as Plato says) arise from water percolated through a plant, and does even sea-water percolated lose its saltness, being terrene and of gross parts? Therefore people that dig near the sea happen upon wells fit to drink. Several also that draw the sea-water into waxen buckets receive it sweet and potable, the salt and earthy matter being strained out. And straining through clay renders sea-water potable, since the clay retains the earthy parts and does not let them pass through. And since things are so, it is very probable either that plants receive no saltness extrinsically, or, if they do, they put it not forth into fruit; for things terrene and consisting of gross parts cannot pass, by reason of the straitness of the passages. Or may saltness be reckoned a sort of bitterness? For so Homer says:

Out of his mouth the bitter brine did flow,

And down his body from his head did go.

[*](Odyss. V. 322.)

WHETHER (as Laitus said) that by the tenuity of the dew the moisture of the skin is fretted away? Or, as smut and mildew fall upon moistened seeds, so, when the green and tender parts on the superficies are fretted and dissolved by the dew, is a certain noxious taint carried and imparted to the most bloodless parts of the body, as the legs and feet, which there eats and frets the superficies? For that by Nature there is a corrosive faculty in dew sufficiently appears, in that it makes fat people lean; and gross women gather it, either with wool or on their clothes, to take down their flesh.

WHETHER, because the river-air, which is at all times heavy and slow, being in winter more condensed by the cold, does more resist sailing? Or is it long of the water rather than the air? For the piercing cold makes the water heavy and thick, as one may perceive in a water-clock; for the water passes more slowly in winter than in summer. Theophrastus talks of a well about Pangaeum in Thrace, how that a vessel filled with the water of it weighs twice as much in winter as it does in summer. Besides, hence it is apparent that the grossness of the water makes ships sail slower, because in winter river-vessels carry greater burthens. For the water, being made more dense and heavy, makes the more renitency; but the heat hinders the sea from being condensed or frozen.

WHETHER that motion expels and dissipates the heat of other liquors as a thing adscititious, and the winds do rather excite and increase the innate heat of the sea? Its transparentness is an argument of heat; and so is its not being frozen, though it is terrene and heavy.

Is it that the bitterness of the sea is not devoid of all sweetness, as receiving so many rivers into it; but, since the sun exhales the sweet and potable water thereof, arising to the top by reason of its levity, and since this is done in summer more than in winter, when it affects the sea more weakly by reason of the debility of its heat, that so in winter a great deal of sweetness is left, which tempers and mitigates its excessive poisonous bitterness? And the same thing befalls potable waters; for in summer they are worse, the sun wasting the lightest and sweetest part of them. And a fresh sweetness returns in winter, of which the sea must needs participate, since it moves, and is carried with the rivers into the sea.

WHETHER that heat is good against cold? Or that it quenches heat, by diluting the wine and destroying its strength? Or that the aqueous and aerial part of wine (which is therefore prone to mutation) is stayed by the throwing in of terrene parts, whose nature it is to constipate and condense? Moreover, salts with the sea-water, attenuating and colliquating whatever is foreign and superfluous, suffer no fetidness or putrefaction to breed. Besides, the gross and terrene parts, being entangled with the heavy and sinking together, make a sediment or lees, and so make the wine fine.

OF all the senses, smelling causes nauseousness the most, and of all the passions of the mind, fear. For men tremble and shake and bewray themselves upon apprehension of great danger. They that sail in a river are troubled with neither of these. And the smell of sweet and potable water is familiar to all, and the voyage is without danger. On the sea an unusual smell is troublesome; and men are afraid, not knowing what the issue may be. Therefore tranquillity abroad avails not, while an estuating and disturbed mind disorders the body.

Is it for that the winds, slipping the smooth oil, have no force, nor cause any waves? This may be probably said in respect of things external; but they say that divers take oil in their mouths, and when they spout it out they have light at the bottom, and it makes the water transparent; so that the slipping of the winds will not hold good here for an argument. Therefore it is to be considered, whether the sea, which is terrene and uneven, is not compacted and made smooth by the dense oil; and so the sea, being compact in itself, leaves passes, and a pellucidity penetrable by the sight. Or whether that the air, which is naturally mixed with the sea, is lucid, but by being troubled grows unequal and shady; and so by the oil’s density, smoothing its inequality, the sea recovers its evenness and pellucidity.

Is not that the cause which Theophrastus assigns,—that heat (to wit) shuns the cold, and is constrained by it on every side? Hence the waters are hottest in the bottom of the sea. And so it is on land; for springs are hotter in winter, and then lakes and rivers send up most vapors, because the heat is compelled to the bottom by the prevailing cold. Or it may be, nets do not rot at that time more than at another; but being frozen and dried in the cold, since they are therefore the more easily broken by the waves, they are liable to something like putrefaction

Is it because hay rained upon is never well made? For the grass is cut down green and not dry, wherefore it putrefies when wet with rain water. But when before harvest it rains upon corn, this is a help to it against the hot south winds; which otherwise would not let the grain fill in the ear, but by their heat would hinder and destroy all coalition, unless by watering the earth there came a moisture to cool and moisten the ear.

Is it because a stronger grain needs more nourishment, and a weaker a light and thin one? Now barley is weaker and laxer than wheat, therefore it affords but little nourishment. And, as a farther testimony to this reason, wheat, that is ripe in three months, grows in dryer ground; because it is juiceless, and stands in need of less nourishment, and therefore is more easily brought to perfection.

Is the reason (as we said) because wheat takes up more nourishment; and barley cannot bear so much, but is choked with it? Or does wheat, because it is hard and ligneous, thrive better when it is softened and loosened in a moist soil; and barley at the first in a dry soil, because of its rarity? Or is the one temperament congruous and harmless to wheat, because it is hot; and the other to barley, because it is cold? Or are men afraid to sow wheat in a dry soil, because of the ants, which presently lie in wait for it; but they cannot so easily deal with barley nor carry it away, because it is a larger grain?

Is it that the males are stronger in those parts, as well as in others, than the females? Or is it that the females spoil the hair of their tails by their staling?

Is it because all fishes of the soft kind cannot endure cold, by reason of their nakedness and tenderness? For they are covered neither with shell, skin, or scale, though within they have hard and bony parts. Hence the Greeks call them soft fish. Therefore they easily perceive a storm

WHETHER, as Theophrastus writes, because it is an animal by nature timorous; and therefore, being disturbed, it changes color with its spirit, as some men do, of whom it is said, an ill man ever changes color? But though this may serve as a reason for changing its color, it will not for the imitation of colors. For the polypus does so change its color, that it is of the color of every stone it comes nigh. Hence that of Pindar, Mind the color of the marine beast, and so converse cunningly in all cities; and that of Theognis:

Put on a mind like th’ polyp fish,—

And learn so to dissemble,—

Which of the rock whereto it sticks

The color doth resemble.

[*](Theognis, vs. 215.)

THE reason seems to be the heat and cold of these animals. For the hart is cold, and the boar is very hot and fiery; therefore the one flies from, the other defends himself against, his pursuers. Now when great store of heat comes to the eyes (as Homer says, with horrid bristles, and eyes darting fire), tears are sweet. Some are of Empedocles’s opinion, who thought that tears proceed from the disturbance of the blood, as whey does from the churning of milk; since therefore boar’s blood is harsh and black, and