Show ac acetylene tylene shells for german navy experiments experiments are now being carried out on german warships with acety lene shells which it Is believed will take the place of the electric search light used hitherto by warships these shells contain calcium carbide and the water can reach them through a tube the shells are fired by a gun glin built specially for the purpose on he be 1 0 ing fired the shell goes under water i and then rises to the surface and the action of the water upon the calcium carbide produces the acetylene no light each shell is said to have candle i power and will burn for three hours |