That thou mayst know by what devices this Is brought about, in chief thou must recall What we have said before, that seeds are kept Commixed in things in divers modes. Again, As all the breathing creatures which take food Are outwardly unlike, and outer cut And contour of their members bounds them round, Each differing kind by kind, they thus consist Of seeds of varying shape. And furthermore, Since seeds do differ, divers too must be The interstices and paths (which we do call The apertures) in all the members, even In mouth and palate too. Thus some must be More small or yet more large, three-cornered some And others squared, and many others round, And certain of them many-angled too In many modes. For, as the combination And motion of their divers shapes demand, The shapes of apertures must be diverse And paths must vary according to their walls That bound them. Hence when what is sweet to some, Becomes to others bitter, for him to whom 'Tis sweet, the smoothest particles must needs Have entered caressingly the palate's pores.
And, contrariwise, with those to whom that sweet Is sour within the mouth, beyond a doubt The rough and barbed particles have got Into the narrows of the apertures.
Now easy it is from these affairs to know Whatever...
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Indeed, where one from o'er-abundant bile Is stricken with fever, or in other wise Feels the roused violence of some malady, There the whole frame is now upset, and there All the positions of the seeds are changed,-So that the bodies which before were fit To cause the savour, now are fit no more, And now more apt are others which be able To get within the pores and gender sour.
Both sorts, in sooth, are intermixed in honey-What oft we've proved above to thee before.
Now come, and I will indicate what wise Impact of odour on the nostrils touches.
And first, 'tis needful there be many things From whence the streaming flow of varied odours May roll along, and we're constrained to think They stream and dart and sprinkle themselves about Impartially. But for some breathing creatures One odour is more apt, to others another-Because of differing forms of seeds and pores.
Thus on and on along the zephyrs bees Are led by odour of honey, vultures too By carcasses. Again, the forward power Of scent in dogs doth lead the hunter on Whithersoever the splay-foot of wild beast Hath hastened its career; and the white goose, The saviour of the Roman citadel, Forescents afar the odour of mankind.
Thus, diversly to divers ones is given Peculiar smell that leadeth each along To his own food or makes him start aback From loathsome poison, and in this wise are The generations of the wild preserved.
Yet is this pungence not alone in odours Or in the class of flavours; but, likewise, The look of things and hues agree not all So well with senses unto all, but that Some unto some will be, to gaze upon, More keen and painful. Lo, the raving lions, They dare not face and gaze upon the cock Who's wont with wings to flap away the night From off the stage, and call the beaming morn With clarion voice- and lions straightway thus Bethink themselves of flight, because, ye see, Within the body of the cocks there be Some certain seeds, which, into lions' eyes Injected, bore into the pupils deep And yield such piercing pain they can't hold out Against the cocks, however fierce they be-Whilst yet these seeds can't hurt our gaze the least, Either because they do not penetrate, Or since they have free exit from the eyes As soon as penetrating, so that thus They cannot hurt our eyes in any part By there remaining.
To speak once more of odour;
Whatever assail the nostrils, some can travel A longer way than others. None of them, However, 's borne so far as sound or voice-While I omit all mention of such things As hit the eyesight and assail the vision.
For slowly on a wandering course it comes And perishes sooner, by degrees absorbed Easily into all the winds of air;-And first, because from deep inside the thing It is discharged with labour (for the fact That every object, when 'tis shivered, ground, Or crumbled by the fire, will smell the stronger Is sign that odours flow and part away From inner regions of the things). And next, Thou mayest see that odour is create Of larger primal germs than voice, because It enters not through stony walls, wherethrough Unfailingly the voice and sound are borne;Wherefore, besides, thou wilt observe 'tis not So easy to trace out in whatso place The smelling object is. For, dallying on Along the winds, the particles cool off, And then the scurrying messengers of things Arrive our senses, when no longer hot.
So dogs oft wander astray, and hunt the scent.
Now mark, and hear what objects move the mind, And learn, in few, whence unto intellect Do come what come. And first I tell thee this:
That many images of objects rove In many modes to every region round-So thin that easily the one with other, When once they meet, uniteth in mid-air, Like gossamer or gold-leaf. For, indeed, Far thinner are they in their fabric than Those images which take a hold on eyes And smite the vision, since through body's pores They penetrate, and inwardly stir up The subtle nature of mind and smite the sense.
Thus, Centaurs and the limbs of Scyllas, thus The Cerberus-visages of dogs we see, And images of people gone before-Dead men whose bones earth bosomed long ago;Because the images of every kind Are everywhere about us borne- in part Those which are gendered in the very air Of own accord, in part those others which From divers things do part away, and those Which are compounded, made from out their shapes.
For soothly from no living Centaur is That phantom gendered, since no breed of beast Like him was ever; but, when images Of horse and man by chance have come together, They easily cohere, as aforesaid, At once, through subtle nature and fabric thin.