Keepशिलान्तरेषु जायन्ते कीटभेकघुणादयः ।विष्ठायामपि जायन्ते नानाकीटगणास्तथाIn plain wordsIn the crevices of rocks are born insects, frogs, wood-worms, and the like; in dung too, just so, are born manifold hosts of insects.