These [items] spread [tumah] but do not act as barriers [against tumah]: a chest, a box, a cabinet, a large straw basket, a large reed basket, and the water tank of an Al-exandrian ship — if they do not have [flat] bottoms or if they do not contain forty se’ah of liquid, which is two kors of dry measure; a curtain, a work apron, a bed cov-er, a sheet, matting, and a mat, if they have not been made into tents; the carcass of a domesticated or wild animal, and food that can become tamei. In addition to these, a mill powered by a person [spreads tumah but does not block tumah].