A new and important use for aluminum is in the manufacture of firemen’s helmets, as shown in the cut. These helmets are made of sheet aluminum, either stamped out of a single piece or in separate pieces, and riveted together, and are then japanned any color desired, according to the taste of the firecompanies. The helmets have corrugated cones and heavy ribs, which gives them great stiffness. Each helmet has a soft woolen lining, which can be padded or reduced to fit the head of the wearer. They have now been in use by the New York fire department for four or five months, and all firemen who have worn them think they are a great improvement over the old leather headgear. The advantages of the aluminum helmet are that it is light, and always keeps its shape, and is impervious to water. The general appearance of the aluminum helmet is the same as that of the leather. The front piece can be of leather,and the same decorations ason the leather helmet are obtained. The lining is removable, so that, when soiled, the fireman can put in a new lining, and he has practically a new headgear. These aluminum helmets are for sale by the Gleason & Bailey Manufacturing Company,of New York.