"As these trees were consumed by fire the rains which fell on them calcined the ashes, so that the congealed juice petrified in the same way that the humour of burnt fern is metamorphosed into glass; and thus in all the countries of the Earth the ashes of these twin trees formed two metallic stones called to-day the iron and the loadstone, which, because of the sympathy of the fruits of Pylades and Orestes, whose virtue they have always preserved, aspire every day to embrace; and notice that if the piece of loadstone is larger it attracts the iron, but if the piece of iron exceeds the other in quantity it attracts the loadstone, as happened of old in the miraculous effect of the apples of Pylades and Orestes; for whoever had eaten more of one of them was the more beloved by him who had eaten of the other.

"Well, iron feeds upon the loadstone and the loadstone feeds upon iron so visibly that the one grows rusty and the other loses its strength unless they are brought together to repair what is lost of their substance.

"Have you never observed a piece of loadstone placed on iron filings? In a flash you see the loadstone covered with these metallic atoms; and they grip with such amorous ardour so suddenly and so impatiently that after they have embraced everywhere you would say there is not a grain of loadstone which does not desire to kiss a grain of iron, and not a grain of iron which does not wish to unite with a grain of loadstone; for the iron and the loadstone, when separated, continually send out from their bulk the most active small bodies in search of what they love, but when they have found it and have nothing more to desire, each terminates its travels; the loadstone spends its repose in the possession of the iron, as the iron collects all its being to enjoy the loadstone. It is therefore from the sap of these two trees that the moisture flowed from which these two metals were born. Before that they were unknown; and if you wish to know from what matter they manufactured weapons of war—Samson armed himself with the jaw-bone of an ass against the Philistines; Jupiter, King of Crete, with artificial fire by means of which he imitated thunder and overcame his enemies; and Hercules conquered tyrants and tamed monsters with a club. But these two metals have another much more specific relation to our two trees. You must know that although this lifeless couple of lovers turn towards the pole, they never do so except in each other's company; and I will discover to you the reason of this after I have discoursed to you a little about the poles.

"The poles are the mouths of the sky by which it takes in the light, heat and influences it has diffused upon the Earth; otherwise, if all the treasures of the Sun did not return to their source it would long ago be extinct (since its light is only a dust of burning atoms shed from its globe) and would shine no more or else this abundance of small igneous bodies heaped continually upon the Earth would already have consumed it. Therefore, as I have said, the sky must have vent-holes by which the repletions of the Earth are cast out and others by which the sky can repair its losses, so that the eternal circulation of these little bodies of life may successively penetrate all the globes of this great universe. Now the vent-holes of Heaven are the poles by means of which it feeds upon the souls of everything that dies in its worlds and all the planets are the mouths and pores by whose means its spirits are exhaled afresh. And to show you that this is not so novel a fancy, observe that when your ancient poets, to whom philosophy had discovered the most hidden secrets of Nature, were speaking of a hero and desired to say that his soul was gone to dwell with the Gods, they expressed themselves thus: 'He has risen to the pole; he is seated above the pole; he has passed the pole:' because they knew that the poles were the only entrances by which the sky receives all that has left it. If the authority of these great men does not fully satisfy you, the experience of those moderns who have travelled towards the north will perhaps content you. They have found that the nearer they approach the Bear during the six months of night, when it was thought this country was entirely black, the horizon was illuminated by a great light, which could only come from the pole, because the nearer they approached it, and consequently the farther they drew from the Sun, the larger the light became. It is therefore very probable that this light proceeds from rays of daylight and from a great heap of souls which, as you know, are made of luminous atoms alone, returning to the sky by their accustomed portals.

"After that it is not difficult to understand why iron rubbed with loadstone or loadstone rubbed with iron turns towards the pole; for since they are extracted from the bodies of Pylades and Orestes and have always preserved the propensities of the two trees, as the two trees preserved those of the two lovers, they must aspire to rejoin their soul, and so they strain towards the pole, whither they feel it has risen, with this proviso, that the iron does not turn unless it is rubbed by the loadstone nor the loadstone if it is not rubbed by the iron, because iron will not abandon a world without its friend, loadstone, nor loadstone without its friend, iron; and they cannot resolve to make this voyage without each other."

I think the voice was going to begin another discourse; but it was prevented by the noise of a loud alarm; the whole forest in disturbance echoed with the words: Beware the plague! and Pass it on!

I begged the tree, which had talked to me so long, to inform me what was the reason of this great disorder.

"My friend", it said, "in this district we have not yet received precise details of the misfortune; I can only tell you in three words that the plague by which we are menaced is what men call a conflagration; and we may well name it a plague, for among us no disease is so contagious. The remedy we shall apply to it is to hold our breath and then to blow all together on the place whence the conflagration is moving, in order to repulse this dangerous air. I think this burning fever has been brought to us by a Fire-Beast, which for some days has been wandering about these woods; for since these beasts never go without fire and cannot do without it, this one no doubt has set fire to one of our trees.

"We have sent for the Ice-Animal to come to our aid; but it has not yet arrived. But now farewell, I have no time to talk to you, I must think of the common safety; and you yourself should take to flight, otherwise you run the risk of being involved in our ruin."

I followed its advice, but without hurrying very much, because I knew my legs. However I was so ignorant of the plan of that country that at the end of ten hours' walking I found myself behind the forest I thought I was avoiding; and to increase my apprehension, a hundred terrible thunder-claps shook my brain, while the pale dismal light of a thousand flashes of lightning quenched my eye-balls.