Steel Pointed Rifled Balls

-A writer in the Sctenlifio American has been esperimenting as follows with steel bulleU : I had a target of 2-inch plank covered with a half inch plate of cast ron, and a cast steel plate onoeighth of au inch thick. I fired at a distance oí forty yards. I furniahed several of the bullets with sharp steel points, like a punch or cold chisel. - Only one of the bullets which were not pointed penetrated the cast steel (the others giancing off), and that not until it had furrowed it for several inches and carne in contact with the edge of the cast iron. The pointed bulletts, on the other hand, penetrated both plates and one inch of the plank.