BELLOWS

A machine contrived to propel air through a tube or orifice. It is used for blowing fires, supplying the pipes of organs, and other purposes, and is constructed according to various forms, but the principle is the same in all of them. The dimensions of a space in which air is confined are contracted; the air, being permitted to escape only at a small opening, rushes out with a velocity proportional to the pre ure and to the smallne of the opening. BELLUvE. (Lat bellua, any great beast.) The term by which Linnaeus designated an order of Mammal i a, nearly corresponding to the Pachyderms of Cuvier. [s. 155]