Son. I believe I still have some questions to ask about this country. How do you account for the fact that Greenland and the ocean that lies about it have greater masses of ice than any other land or sea? For I gather from what you have said that the ocean is deep and also very salt and always in commotion; and I did not suppose that it could freeze readily there, since, where the ocean is deep and the water is salt, ice forms with difficulty, especially when the sea is in turmoil and the waves roll high. But now I hear about these waters that we have just talked about and likewise about the land, that there is never an interval when the land or the sea is not covered with ice, except that occasionally an opening appears here and there in the ice field; but this is due to the stirring of the sea and not to the heat.

Now since the land is constantly frozen over in both winter and summer, I wish to ask you to tell me exactly how the climate is in Greenland: whether there is any warmth or fair sunshine as in other lands, or if the weather is always unpleasant, and whether that is what causes the excessive ice and frost. I should like to have you clear this matter up for me along with those things that I asked about earlier in our conversation, and what that thing is which the Greenlanders call the northern lights.^[228] All these questions I should like to have you answer, and also this, in what part of the world you believe that country to be located: whether it lies somewhere on the edge of the world or about some large bend in the ocean like other extensive lands, seeing that you think it is joined to other mainlands.

Father. The matters about which you have now inquired I cannot wholly clear up for you, inasmuch as I have not yet found any one who has knowledge of the entire “home-circle”^[229] and its dimensions and who has explored the whole earth on all its sides, or the nature of the lands and the landmarks located there. If I had ever met such a man, one who had seen and examined these things, I should have been able to give you full information about them. But I can at least tell you what those men have conjectured who have formed the most reasonable opinions.

The men who have written best concerning the nature of the earth, following the guidance of Isidore and other learned men,^[230] state that there are certain zones on the heavens under which men cannot live. One is very hot and, because of the glowing heat which burns everything that comes beneath it, people cannot exist under this zone. It seems reasonable that this is the broad path of the sun, and I believe it is because this zone is pervaded with the sun’s flaming rays that no one who wishes only a moderately warm dwelling place can live beneath it. These writers have also said concerning two other zones in the sky that under them too the land is uninhabitable; because, on account of their frigidity, it is no more comfortable to dwell under them than under the first mentioned where the heat is torrid. For there the cold has developed such a power that water casts aside its nature and turns into ice masses; in this way all those lands become ice-cold, and the seas too, that lie under either of these two zones. From this I conclude that there are five zones in the heavens: two under which the earth is habitable, and three under which it is uninhabitable.

Now all the land that lies under the zones between the hot and the cold belts can be occupied; but it is likely that owing to location the lands differ somewhat, so that some are hotter than others; the hottest being those that are nearest the torrid belt. But lands that are cold, like ours, lie nearer the frigid zones, where the frost is able to use its chilling powers. Now in my opinion it seems most probable that the hot zone extends from east to west in a curved ring like a flaming girdle around the entire sphere. On the other hand, it is quite probable that the cold zones lie on the outer edges of the world to the north and south: and in case I have thought this out correctly, it is not unlikely that Greenland lies under the frigid belt; for most of those who have visited Greenland testify that there the cold has received its greatest strength. Moreover, both sea and land bear testimony in their very selves that there the frost and the overpowering cold have become dominant, for both are frozen and covered with ice in summer as well as in winter.

It has been stated as a fact that Greenland lies on the outermost edge of the earth toward the north; and I do not believe there is any land in the home-circle beyond Greenland, only the great ocean that runs around the earth. And we are told by men who are informed that alongside Greenland the channel is cut through which the wide ocean rushes into the gap that lies between the land masses and finally branches out into fjords and inlets which cut in between the lands wherever the sea is allowed to flow out upon the earth’s surface.

You asked whether the sun shines in Greenland and whether there ever happens to be fair weather there as in other countries; and you shall know of a truth that the land has beautiful sunshine and is said to have a rather pleasant climate. The sun’s course varies greatly, however; when winter is on, the night is almost continuous; but when it is summer, there is almost constant day. When the sun rises highest, it has abundant power to shine and give light, but very little to give warmth and heat; still, it has sufficient strength, where the ground is free from ice, to warm the soil so that the earth yields good and fragrant grass. Consequently, people may easily till the land where the frost leaves, but that is a very small part.

But as to that matter which you have often inquired about, what those lights can be which the Greenlanders call the northern lights, I have no clear knowledge. I have often met men who have spent a long time in Greenland, but they do not seem to know definitely what those lights are. However, it is true of that subject as of many others of which we have no sure knowledge, that thoughtful men will form opinions and conjectures about it and will make such guesses as seem reasonable and likely to be true. But these northern lights have this peculiar nature, that the darker the night is, the brighter they seem; and they always appear at night but never by day,—most frequently in the densest darkness and rarely by moonlight. In appearance they resemble a vast flame of fire viewed from a great distance. It also looks as if sharp points were shot from this flame up into the sky; these are of uneven height and in constant motion, now one, now another darting highest; and the light appears to blaze like a living flame. While these rays are at their highest and brightest, they give forth so much light that people out of doors can easily find their way about and can even go hunting, if need be. Where people sit in houses that have windows, it is so light inside that all within the room can see each other’s faces. The light is very changeable. Sometimes it appears to grow dim, as if a black smoke or a dark fog were blown up among the rays; and then it looks very much as if the light were overcome by this smoke and about to be quenched. But as soon as the smoke begins to grow thinner, the light begins to brighten again; and it happens at times that people think they see large sparks shooting out of it as from glowing iron which has just been taken from the forge. But as night declines and day approaches, the light begins to fade; and when daylight appears, it seems to vanish entirely.

The men who have thought about and discussed these lights have guessed at three sources, one of which, it seems, ought to be the true one. Some hold that fire circles about the ocean and all the bodies of water that stream about on the outer sides of the globe; and since Greenland lies on the outermost edge of the earth to the north, they think it possible that these lights shine forth from the fires that encircle the outer ocean. Others have suggested that during the hours of night, when the sun’s course is beneath the earth, an occasional gleam of its light may shoot up into the sky; for they insist that Greenland lies so far out on the earth’s edge that the curved surface which shuts out the sunlight must be less prominent there. But there are still others who believe (and it seems to me not unlikely) that the frost and the glaciers have become so powerful there that they are able to radiate forth these flames. I know nothing further that has been conjectured on this subject, only these three theories that I have presented; as to their correctness I do not decide, though the last mentioned looks quite plausible to me. I know of no other facts about Greenland that seem worth discussing or mentioning, only those that we have talked about and what we have noted as the opinions of well-informed men.