What is cloven air? And who gets any benefit by it?

Yes, if the geese flew as they walk—one directly behind the other—there might perhaps, in a contrary wind, be some little shelter and relief for the very last ones. But they fly nearly side by side in such a manner that each one, from first to last, receives completely 'uncloven' air right in the breast; there can be no suggestion that it is easier for the last than for the first bird to cut a way.

The peculiar order of flight has quite another meaning, viz., to keep the flock together on the long and fatiguing journey; and if we start from this basis, the reasoning thought becomes also evident in the arrangement itself.

Out here by the broad Aarre Water there pass great flights of wild-geese; and in bad weather it may happen that they sit in thousands on the water, resting and waiting.

But even if the flock flies past, there is always uneasiness and noise when they come over Aarre Water. The ranks break, for a time the whole becomes a confused mass, while they all scream and quack at the same time.

Only slowly do they form again and fly southward in long lines, until they shrink to thinner and thinner threads in the gray autumn sky, and their last sound follows them upon the north wind.

Then I always believe that there has been a debate as to whether they should take a little rest down on Aarre Water. There are certainly many old ones who know the place again, and plenty of the young are tender-winged, and would fain sit on the water and dawdle away a half-day's time.

But when it is eventually resolved to fly on without stopping, and the lines again begin to arrange themselves, it has become clear to me that each seeks his own place in the ranks slanting outwards behind the leaders, so that by this means he may be conducted along with the train without being under the necessity of troubling about the way.

If these large, heavy birds were to fly in a cluster for weeks, day and night, separation and confusion would be inevitable. They would get in each other's way every minute with their heavy wings, there would be such a noise that the leader's voice could not be distinguished, and it would be impossible to keep an eye upon him after dark. Besides, over half the number are young birds, who are undertaking this tremendous journey for the first time, and who naturally, at Aarre Water, begin to ask if it be the Nile that they see. Time would be lost, the flock would be broken up, and all the young would perish on the journey, if there were not, in the very disposition of the ranks, something of the beautiful reasoning thought binding them together.

Let us now consider the first bird, who leads the flock—presumably an old experienced gander. He feels an impulse towards the south, but he undoubtedly bends his neck and looks down for known marks in the landscape. That is why the great flocks of geese follow our coast-line southward until the land is lost to view.