Anthracite coal being a much nore dense material ... they are apt to be troublesome whenthere is too \ great draft. A coal stove or furnace should therefore be so | constructed that its draft ...

F. Isherwood, Chief Engineer, U. S. N., it appears that the Collin's steamers use anthracite on the voyage to Liverpool, and Welsh coal, also an anthracite, on the return voyage. The Welsh coal ...