The swifts, which had but just arrived, were rushing through the sky in their headlong way; they would build presently in the roof. The mill was built at the mouth of a coombe on the verge of the Downs; the coombe was narrow and steep, as if nature had begun a cutting with the view of tunnelling through the mass of the hills. At the upper end of the coombe the spring issued, and at the lower was the millpond. There is something peculiarly human in a mill--something that carries the mind backwards into the past, the days of crossbow and lance and armour. Possibly there was truth in Tibbald's idea that men grow larger in the present time without corresponding strength, for is it not on record that some at least of the armour preserved in collections will not fit those who have tried it on in recent times? Yet the knight for whom it was originally made, though less in stature and size, may have had much more vigour and power of endurance. The ceaseless rains last year sent the farmers in some places to the local millers once more somewhat in the old style. Part of their wheat proved so poor that they could not sell it at market; and, rather than waste it, they had it ground at the village mills with the idea of consuming as much of the flour as possible at home. But the flour was so bad as to be uneatable. As I parted with Tibbald that morning he whispered to me, as he leaned over the hatch, to say a good word for him with Hilary about the throw of oak that was going on in one part of the Chace. 'If you was to speak to he, he could speak to the steward, and may be I could get a stick or two at a bargain'--with a wink. Tibbald did a little in buying and selling timber, and, indeed, in many other things. Pleased as he was to show me the mill, and to talk about it by the hour together, the shrewd old fellow still had an eye to business. After a while, in walking along the footpaths of the meadows and by the woods, a feeling grew upon me that it would be pleasant to know something of their history. It was through inquiring about the age of the rookery that this thought took shape. No one could tell me how long the rooks had built there, nor were there any passing allusions in old papers to fix the date. There was no tradition of it among the oldest people; all they knew was that the rooks had always been there, and they seemed to indicate a belief that there the rooks would always remain. It seemed to me, however, that the site of their city was slowly travelling, and in a few generations might be found on the other side of the Chace. Some of the trees where the nests were most numerous were decaying, and several were already deserted. As the trees died, the rooks moved to the next clump, and thus gradually shifted their city.