"They are pure of themselves, and not from compulsion. Before every meal they must have a wash; the fragments and remains are not served up again; the food utensils are not passed on; those which are of pottery or of wood must be thrown away after use, and those which are of gold, silver, copper or iron get another polishing. As soon as a meal is over they chew the tooth-stick and make themselves clean. Before they have finished ablutions they do not come in contact with each other."