which the rear bow is the chord, their Uelsmann, in Dingler's Polytechnisches Journal, that soda and only points of contact being at the ends of the spring, and boat, being at the rate of 103 hits per minute. potash carbonates are used instead of the corresponding The four barrel gun is illustrated… … Blienish Steel Works at Ruhrort, limestone, free from mag- THE NOBDENFELT GTTN. nesia, containing not more than from 15 to 20 per cent of When the top is thrown back, instead of the bow striking silicic acid, alumina, iron oxide, and manganese oxide may The gun consists of a rectangular framework…
