per tun Perry, of Bilston, for Messrs. Holloways' iron-works, in of iron in its favor. the Forest of Dean. This arrangement has been found Mr. Sampson Lloyd having been connected with the ™ -ip to be a valuable improvement, in- first introduction of hot-blast into Staffordshire, and the creasing… … the system of hot-blast; and the large increase in yield l'ound oven were due, finding that he required rather of the furnaces, that had been referred to, marked the in- more heat than one round oven would afford, and not Fig. 1 represents the valve open so that that the gas is troduction of the…