Page:Rural Hours.djvu/298

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268
RURAL HOURS.

upon their former track. We watched them for more than an hour, while they kept up the same evolutions with much more regularity than usual; perhaps they were trying their wings for the journey southward.

It is amusing to look back to the discussions of naturalists during the last century, upon the subject of the migration of swallows: a number of them maintained that these active birds lay torpid during the cold weather in caves and hollow trees; while others, still more wild in their theories, supposed that swallows went under water and passed the winter in the mud, at the bottom of rivers and pools! Grave and learned were the men who took sides in this question, for and against the torpid theory. One might suppose that it would have required a great amount of the clearest evidence to support a notion so opposed to the general habits of those active birds; but the facts that among the myriads of swallows flitting about Europe, one was occasionally found chilled and torpid, that swallows were frequently seen near the water, and that during the mild days of autumn a few stragglers appeared again, when they were supposed to revive, made up the chief part of what was urged in favor of these notions. It would be difficult to understand how sensible people could be led to maintain such opinions, were it not that men, both learned and unlearned, often show a sort of antipathy to simple truths. Thomson, in the Seasons, alludes to this strange notion; speaking of the swallows, he says:

Warn'd of approaching winter, gathered, play
The swallow people; and toss'd wide around
O'er the calm sky, in convolution swift,
The feather'd eddy floats; rejoicing once