The Holy Scriptures make frequent allusions to this interesting bird. Jeremiah, reproaching the Jews for their turning away from God, alludes to the swallow as obeying His laws, while they who have seen his glory rebelled: “Yea, the stork in the heaven knoweth her appointed times; and the turtle and the crane and the swallow observe the time of their coming; but my people know not the judgment of the Lord.” viii. 7. The Psalmist notices the partiality of this bird for the temple of worship, the sanctuary of God: “Yea, the sparrow hath found an house, and the swallow a nest for herself, where she may lay her young, even thine altars, O Lord of hosts, my King and my God.” Psalm lxxxiv. 3. Hezekiah, king of Judah, wrote of himself, “Like a crane or a swallow, so did I chatter.” Is. xxxviii. 14. In these casual notices we at least trace out that the habits, migration, and song of the swallow, were known to the inspired writers; a circumstance of no little value, since a false assertion that the facts of natural history are not correctly stated in the Bible, has long been among the weak engines used by the infidel against the validity of that book, “which maketh wise unto salvation.” The Sand Martin, or Bank Swallow, is a most curious bird of this family. It is the least of the tribe, and the first to arrive, appearing a week or two before the swallow, and often while the weather is severe. Its flight is vacillating, but it is equally fond of skimming over the surface of the water. This bird, unlike its race, mines deep holes in sand or chalk cliffs, to the depth of two feet, or even more, at the extremity of which it constructs a loose nest of fine grass and feathers, artificially put together, in which it rears its brood. The sand martin is of a social disposition; hence flocks of them unite to colonize a favorite locality, such as a precipitous bank or rock, which they crowd with their burrows. Professor Pallas says, that on the high banks of the Irtish, their nests are in some places so numerous, that, when disturbed, the inmates come out in vast flocks and fill the air like flies; and, according to Wilson, they swarm in immense multitudes along the banks of the Ohio and Kentucky.