PH, Monday, September UNEXPECTED EXPLOSION OF A SUBMARINE SHELL. MARVELLOUS ESCAPE OF THE SPECTATORS. Hkbnk Bay ..
... At the top was placed some detonating powder, and into it was tightly fixed glass tube containing sulphuric acid. This tube striking against any bard substance such as the side of a ship, breaks, and the sulphuric acid running.into the detonating powder ...