_And that disk, gentlemen, is a diamond!_ "The violence of the operation, coupled with the intense heat, fuses everything--furnace, projectiles, electric wires, fire-brick, even asbestos, into a single mass.

The cube is opened, and this mass, white-hot, is dropped into cold water.

This increases the pressure until the mass is cool.

Then it is broken away, and in the center is a diamond--as big as a biscuit, gentlemen! Four small bores lead from the two-inch bore through the cube, and permit the escape of air as the projectiles enter.

There is no rebound because the elastic quality of the carbon is crushed out of existence--driven, I may say, into the diamond itself.