But the ordinary bats, such as are signified by the "night-fliers" of the Scriptures, are, when in a state of nature, exceedingly unpleasant creatures. Almost all animals are infested with parasitic insects, but the Bat absolutely swarms with them, so that it is impossible to handle a Bat recently dead without finding some of them on the hands. Also, the bats are in the habit of resorting to caverns, clefts in the rocks, deserted ruins, and similar dark places, wherein they pass the hours of daylight, and will frequent the same spots for a long series of years. In consequence of this habit, the spots which they select for their resting place become inconceivably noisome, and can scarcely be entered by human beings, so powerful is the odour with which they are imbued. Sometimes, when travellers have been exploring the chambers of ruined buildings, or have endeavoured to penetrate into the recesses of rocky caves, they have been repelled by the bats which had taken up their habitation therein. No sooner does the light of the torch or lamp shine upon the walls, than the clusters of bats detach themselves from the spots to which they had been clinging, and fly to the light like moths to a candle. No torch can withstand the multitude of wings that come flapping about it, sounding like the rushing of a strong wind, while the bats that do not crowd around the light, dash against the explorers, beating their leathery wings against their faces, and clinging in numbers to their dress. They would even settle on the face unless kept off by the hands, and sometimes they force the intruders to beat a retreat. They do not intend to attack, for they are quite incapable of doing any real damage; and, in point of fact, they are much more alarmed than those whom they annoy. Nocturnal in their habits, they cannot endure the light, which completely dazzles them, so that they dash about at random, and fly blindly towards the torches in their endeavours to escape. [Illustration: BATS' RESTING-PLACE.] If, then, we keep in mind the habits of the bats, we shall comprehend that their habitations must be inexpressibly revolting to human beings, and shall the better understand the force of the prophecy that the idols shall be cast to the bats and the moles. No particular species of Bat seems to be indicated by the Hebrew word Hatalleph, which is evidently used in a comprehensive sense, and signifies all and any species of Bat. Until very lately, the exact species of Bats which inhabit Palestine were not definitely ascertained, and could only be conjectured. But, Mr. Tristram, who travelled in the Holy Land for the express purpose of investigating its physical history, has set this point at rest, in his invaluable work, "The Land of Israel," to which frequent reference will be made in the course of the following pages.