Chapter 22

Manby's mortar was soon abandoned as cumbrous and dangerous; men were killed during tests; notwithstanding which he was awarded, £2000. The great merit of Trengrouse's invention was that the rocket was much lighter than a shot from a mortar, and was, moreover, more portable, and there was a special line manufactured for it that would not kink, nor would it snap, because the velocity of the rocket increased gradually, whereas that from a discharge of a mortar was sudden and so great that the cord was frequently rupt…