system, proposed by Vavasseur.

[Illustration: THE NEW 110½ TON ELSWICK GUNS FOR H.M.S. BENBOW.]

The maximum firing charge is 900 lb. of cocoa powder. The projectile weighs
1,800 lb. The estimated muzzle velocity is 2,216 ft. per second. The
capacity of the chamber is 28,610 cubic inches, and that of the bore
112,595 cubic inches. The estimated total energy is 61,200 ft. tons. It
will be a few days probably before the full powers of the gun are tested,
but the above are confidently expected to be attained, judging from the
results with the 100 ton guns supplied to Italy. On January 7 last we gave
those of the new Krupp 119 ton gun. It had fired a projectile with a
velocity of almost 1,900 ft. with a charge of less than 864.67 lb., with
moderate pressure. The estimated maximum for this gun was a velocity of
2,017 ft. with a projectile weighing 1,632 lb., giving a total energy of
46,061 ft. tons, or 13,000 ft. tons less than the Elswick gun, comparing
the estimated results.

The proof of the Elswick gun is mounted on a carriage turned out by the
Royal Carriage Department, under Colonel Close. This carriage is made on
bogies so as to run on rails passing easily round curves of 50 ft. radius.
The gun is fired on an inclined length of rails, the recoil presses of the
carriage first receiving the shock and reducing the recoil. The carriage is
made to lift into the government barge, so as to go easily to Shoeburyness
or elsewhere. It can be altered so as to provide for turning, and it allows
the piece to be fired at angles of elevation up to 24 deg. The cheeks of
the carriage are made to open and close, so as to take the 12 in. gun and
larger pieces. The steel castings for it are supplied from the Stanners
Close Steel Works.