had no appearance on them, yet should there be any infection in them, which as yet was not seen, it might be removed, and a spread prevented: and they shall pour out the dust that they scrape off without the city, into an unclean place; the scrapings they were to put into some vessel, and carry them thither and pour them out, or into a cart, and there throw them, that they might lie with other rubbish, and not be made use of any more.