7 · Why is it that stout persons are especially liable to chill, although fat is warm? Is it because, owing to the greatness of their bulk, their extreme parts are far from the internal heat, while their near parts are far from the external cold?
[35] 8 · Why do people shiver after sneezing and after passing urine? Is it because in both processes the veins are emptied, and when they are empty the cold air enters, and this causes shivering?
9 · Why is it that ravenous hunger is felt in cold weather and in winter rather than in summer? Is it because ravenous hunger is brought on through lack of dry [888a1] nourishment, and in the cold and winter the internal heat contracts into a narrower space and its internal nourishment soon fails, and when this happens ravenous hunger is more likely to occur? The faintness and weakness due to ravenous hunger occur when liquefaction takes place in the body owing to the collection of heat in [5] one place. This liquefied matter flows into the region usually occupied by the nourishment and itself becomes nourishment for the body; if it attacks the seat of respiration, loss of voice and weakness ensue, the loss of voice being due to the obstruction of the passage of the breath, while the weakness is caused by the lack of nourishment in the body and internal liquefaction. Treatment in such cases can be [10] quickly and simply applied, because the cause of the trouble is external; for it is the external1 cold making our heat contract which causes the ravenous hunger. So just as one trembles and turns pale from fear, but, when freed from the danger, one recovers immediately; so too those who are suffering from ravenous hunger, after [15] taking a little bread, quickly recover, having undergone a violent and unnatural disturbance, but not having been permanently injured thereby; for the same thing which resists the tendency of nature also restores us to our natural course. Once relax the force which is straining against nature, and the body slips back into its natural state as suddenly as children who are playing at tug-of-war with a rope, if [20] the rope is let go, fall on their backs.
10 · Why is it that those who have undergone athletic training do not bear the cold so well as those who have not done so? Is it because the fat is got rid of by [25] their exercises, and it is the fat which gives warmth, since that which is oily is hot? Or is it because the body is in a more airy and rare condition, because the fat and the excretions have been got rid of, so that there is nothing to keep out the cold? Or is it because through the opening of the pores by perspiration a number of doors are as it were removed? It is clear that the same condition does not conduce both to health and to strength; for obviously a condition of health is one of fatness, while a [30] condition of strength is a state of rarity.
11 · Why do we shiver both when hot and when cold water is poured over us? For it is strange that contraries should produce the same result. Is it because, when cold water is poured over us, the extinguishing of the internal heat causes shivering, whereas, as the effect of warm water, the superficial cold is enclosed in [35] one place and massed together by its inward rush? So both effects are due to the same cause, but in one case it operates from within and in the other from without.
12 · Why do the hairs bristle upon the skin? Is it because they naturally stand erect when the skin is contracted, and this contraction occurs owing to cold and certain other conditions?
[888b1] 13 · Why is it that one shivers at the last emission of urine? Is it because, whilst the warm liquid is still within, the bladder and the passages round it are full, but when it has passed out they fill up again with cold air, for nothing can be empty, [5] but must be full either of something corporeal or of air? Inasmuch then as cold air enters, shivering is a natural result.
14 · Why is it that the tongue of those who are chilled, like that of the drunken, stumbles? Is it because, as it stiffens and hardens with the cold, it becomes [10] difficult to move, and, when this happens, it cannot speak plainly? Or is it because, the outer parts of the body being solidified by the cold, the moisture flows together within and saturates the tongue, and so it cannot perform its function, as has been already described in the case of the drunken? Or is it because owing to the trembling produced by chill, the movement of the tongue is irregular and it cannot [15] articulate the words which it utters, and consequently it stumbles?
15 · Why do the hairs stand erect on the bodies of those who are chilled? Is it because as a result of cooling the heat collects in the inner region of the body, and the flesh, as the heat leaves it, contracts more and more, and, as it is drawn together, [20] the hairs become more upright? Or is it because . . .
16 · Why in the winter are we more likely to become chilled through running than through standing still? Is it because the air surrounding the body, when we stand still, no longer causes discomfort when once the body is thoroughly warm, but on the other hand, when we are running, we are continually encountering more and more cold air, and so are more liable to become chilled? Moreover also air [25] is cold when it is in motion, and it is for the most part such air that meets us in running.
17 · Why is it that it is colder at dawn, although the sun is nearer to us? Is it because the period of the sun’s absence is then at its longest, so that the earth has become more cooled? Or is it because towards daybreak the dew falls, as does the [30] hoar-frost, and both of these are cold? Or do they too fall because the heat which rises from the earth is overpowered, the reason that it is overpowered being the absence of the sun? So that they do not fall when the sun is farther away, but when it is nearer they fall and become congealed, because the longer the sun is absent the [35] cooler the ground becomes. Or is it because the nocturnal breezes tend to cause cold towards daybreak? Or do we only imagine that it is colder because then the food within us is concocted and, the stomach being emptier, we are more liable to feel the cold? This can be illustrated by the fact that we feel very cold after vomiting.
18 · Why is it that those who are chilled feel pain if they are taken straight to the fire, whereas they do not do so if they are warmed gradually? Is it because one [889a1] contrary immediately succeeding another contrary always sets up a violent change? We may compare the fact that if one bends a tree by degrees, it does not suffer, but if one bends it with greater violence and not gradually, it breaks off. If therefore like is unaffected by like, and the heat of a man who is chilled collects and concentrates [5] within him and the moisture and cold are left behind, and a contrary is destructive of its contrary, it follows that, if one is warmed by degrees, the heat comes out gradually and less pain is caused, but, if the warming is not gradual, the heat is rather drawn out.
19 · Why is it that when we are chilled the same heat causes more burning [10] and pain? Is it because owing to its density the flesh holds the heat which comes into contact with it? This is the reason why lead becomes hotter than wool. Or is the passage of the heat violent because the pores are congealed by the cold?
20 · Why is it that those who are angry do not become cold? Is it because [15] anger and wrath are the opposite of cowardice? Now anger is the result of fiery heat, for by retaining a large quantity of fiery heat within us we become warm. This is particularly noticeable in children. For grown-up men when angry become distracted, but children first of all take in breath in large quantities and then blush; [20] for the amount of heat in them being very great and causing liquefaction makes them blush, since, if one were to pour a quantity of cold water on them, they would cease from their wrath, for their heat would be quenched. The opposite occurs in cowards and those who are afraid; for they are chilled and become cold and pale; for the heat leaves the superficial region of their bodies. [25]
21 · Why is it that when we shiver, the hairs stand erect? Do they lie down2 because they grow in moisture? For the weight3 of the hair prevails over the moisture. Now shivering is caused by the cold, for the cold naturally congeals the moisture. When therefore the moisture, out of which the hair grows, undergoes a [30] change and congeals, it is natural that the hair should undergo a change also. If therefore it changes into a contrary condition,
it either remains permanently in that condition, or else the hair will again prevail over the moisture. It is not, however, likely that the hair can by its weight overpower the moisture when it is congealed and condensed; and if it is impossible for the hair to lie down anywhere because the [35] moisture is congealed, the only thing left for it to do is to stand erect. Or is it because, as a result of cooling, the heat collects in the interior region of the body, and the flesh, as the heat leaves it, contracts more and more, and, as it draws together, the hair grows more upright, just as when one fixes a twig or some other object in the ground and fills the space round it and collects the soil on every side, it [889b1] is more likely to remain erect than if one leaves the soil loose round it?
22 · Why is it that those who are chilled find it particularly difficult to go to sleep? Is it because one who is chilled holds his breath rather than exhales, and a [5] sleeper exhales rather than inhales? Chill therefore induces a condition which is directly opposed to sleep.
BOOK IX
PROBLEMS CONNECTED WITH BRUISES, SCARS, AND WEALS
[10] 1 · Why is it that weals can be prevented by the application of newly flayed hides, particularly those of rams, and by breaking eggs over the part affected? Is it because both these things prevent the collection of moisture and the consequent swelling? For the wounded place swells owing to the heat. Now eggs owing to their glutinous consistency cause adhesion and prevent swelling (their effect resembling [15] that of cautery), acting as a kind of glue. The hide owing to its glutinous condition adheres and at the same time by its heat sets up concoction and stops the inflammation, for they do not remove it for several days. Rubbing with salt and vinegar is also employed with the object of drawing out the inflammation.
[20] 2 · Why is it that scars are black on the rest of the body but white on the eye? Is it because a scar, like everything else which is diseased, takes on the contrary of its original colour, and it is in the black part of the eye that wounds are inflicted? However, scars on the body do not become black immediately, but are white at first; [25] nor are scars in the eye always white,1 but it is only after a while that they become absolutely or comparatively so.
3 · Why does a fennel-stalk make the parts round the place which is struck red and the centre of it white? Is it because it presses the blood away from the middle, at the point where, being round, it strikes deepest? Or would one not expect [30] the blood for this reason to return there again, the redness being due to the rush of blood and such a rush taking place towards the part which is struck?
4 · Why is it that, when a violent blow is struck with a fennel-stalk, the middle of the flesh which is struck turns white and the surrounding parts red, whereas, if an ordinary stick is used, the middle is the reddest part? Is it because the [35] fennel-stalk owing to its lightness, if it strikes a hard blow, disperses the blood on the surface, and so the part from which the blood has retired has a white appearance, but the parts to which it flows in greater quantities become redder? When the part struck swells up, the dispersed blood does not readily return to its place, because it is scanty and the course which it must follow is upwards; for it needs the force [890a1] imparted by mass to make it follow an unnatural course. But blows dealt with hard objects owing to their weight and strength cause compression and crushing. The compression, therefore, produces a hollow, while the crushing causes rarity; for crushing is a mild form of cutting and cleaving. The middle of the part struck [5] becoming hollow and rare, the blood flows into it from the surrounding surface; for it naturally flows downwards and into the rare parts, because they give way before it. The blood collecting there naturally makes this part red, while the surrounding regions, from which the blood retires, turn white.
5 · Why do those who are splenetic have black scars? Is it because their [10] blood is corrupted by the admixture of vitiated and watery blood from the spleen? Now the scar occupies only a small depth of the skin on the surface, but the blood, which is black because it is watery and hot, shows through the skin and gives the scar also a black appearance. Moreover, very often the scar meanwhile becomes [15] blacker and blacker; this is due to the same cause, for owing to the weakness of the skin the blood cools, and as the heat evaporates, turns blacker. Similarly in the aged the flesh becomes blacker, and their congenital scars are blacker than those of the young; for their whole body assumes as it were the condition of a bruise owing not to [20] the thinness of their skin but to the fact that their heat fails.
6 · Do things which cause the same effect possess the same power for the production of that effect, or not? For example, seeing that bronze and radishes and mashed beans and sea-lungs and clay and various other things take away bruises, do [25] they do so in virtue of the same power? Or does bronze produce this effect because of its rust, which has a medicinal value, and beans and sea-lungs and clay because they have an attractive force owing to their rarity, and other things for various other reasons? Or is the ultimate effect the same in all these cases (for many of them [30] possess contrary qualities, for example heat and cold), while the earlier effects may nevertheless be different?
7 · Why do all other scars turn black, while those in the eye are white? Is it because they cause a change in respect of colour in the parts in which they occur, and so scars which occur in the eye, which is black, must necessarily be white? [35]
8 · Why is the blow of a fennel-stalk more painful than that of some much harder instruments, if in dealing the blow one considers their comparative effects? For it would be much more natural to suppose that the stroke of a harder instrument would be more painful, for it deals a heavier blow. Is it because the flesh is pained [890b1] not only by receiving a blow but also by dealing one? When it is struck by hard substances, it only receives a blow (for it yields to them because they are hard); but when it is struck by a fennel-stalk, two effects are produced—it receives a blow and it also deals one, because it does not yield owing to the lightness of the weight [5] imposed upon it; and so the blow is of a double nature.
9 · Why are thapsia and metal ladles used to stop bruises (the former being applied immediately, the latter at a later stage), containing as they do opposite qualities? For a ladle is cold, as the poet says,
Between his teeth the chilly bronze he bit;2 [10]
whilst thapsia is hot and burning. Does the ladle have the same effect that water has upon the fainting? For its coldness encounters the heat and prevents it from escaping out of the blood, which collects on the surface owing to the blow and congeals when the heat passes out. For just as would happen if it congealed outside, [15] so the blood congeals near the outer surface while it is still under the skin; but3 if the heat is prevented from escaping by the coldness of the bronze, the blood does not congeal, but disperses again and returns to the area from which it was collected. Thapsia being hot has the same effect; for by its heat it prevents congelation.
[20] 10 · Why are bruises dispersed by the application of copper objects such as ladles and the like? Is it because copper is cold? It therefore prevents the escape of the heat from the blood which collects as the result of the blow, and it is the loss of heat from the surface which causes the bruise. The ladle must therefore be applied quickly before congelation takes place. Thapsia, too, mixed with honey is a good [25] remedy for the same reason; for being hot it prevents the blood from becoming cold.
11 · Why is it that if a wound occurs several times in the same place, the scar turns black? Is it because, whenever a wound is dealt, the part affected is always [30] weak and becomes weaker the more often it is wounded? Now that which is weak is chilled and full of moisture; therefore it has a black appearance. Again4 large and inveterate wounds form black scars, and to receive frequent wounds is equivalent to having one wound for a long time.
12 · Why do we apply metal ladles to bruises? Is it because, when we are [35] struck, the part affected is cooled and the heat leaves it? So the application of the ladle, the material of which, being copper, is cold, prevents the he
at from escaping.
13 · Why is it that hairs do not grow on scars? Is it because the pores, from which the hairs grow, become blocked up and displaced?
[891a1] 14 · Why do blows cause swelling and discoloration? Is it because the moisture in the part affected is dispersed and, after breaking its way into the adjoining regions, recoils again and collects owing to the conglutination of the moisture? Also if any small veins are burst, a collection of bloodshot matter is [5] formed.
BOOK X
A SUMMARY OF PHYSICAL PROBLEMS
1 · Why is it that some animals cough, while others do not, for example a man coughs, but an ox does not? Is it because in most animals the excretion is [10] directed to some other part, but in man to this part? Or is it because in man the brain is very copious and liquid, and coughing occurs when phlegm flows down?
2 · Why is it that in man alone of the animals blood flows from the nostrils? Is it because his brain is very copious and liquid, whence the veins, becoming full of [15] excretion, send forth a stream through the ducts? For unhealthy blood (that is, blood which is mixed with excretions from the brain) is thinner than pure blood and resembles lymph.
3 · Why is it that some animals are fat under the flesh, others in the flesh, and others in both these places? Is it because in those whose flesh is dense the [20] moisture collects between the skin and the flesh, because the skin there is naturally loose,1 and this moisture being concocted turns into fat? Those, on the other hand, who have rare flesh and a tightly fitting2 skin, become fat in the flesh; while those who have both these characteristics are fat both in and under the flesh. [25]
The Complete Works of Aristotle Page 238
