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33 Sir William Jones relates some remarkable instances of the effect of music upon animals, which has certainly been known from time immemorial; the tales of Orpheus would not else have existed. The fact is applied to good purpose by the eastern snake-catchers, and perhaps the story of the pied piper of Hammel is but an exaggerated account of some musical rat-catcher. Beasts of prey are less likely to be affected by it than such as live upon the alarm, and have consequently a quicker and finer sense of hearing.

  There is a chapter in one of our metaphysical writers, shewing how dogs make syllogisms. The illustration is decisive. A dog loses sight of his master, and follows him by scent till the road branches into three; he smells at the first, and at the second, and then, without smelling farther, gallops along the third.