| Show acetylene shells for german navy experiments are now being carried out on german warships with acetylene shells which it Is believed will take the place of the electric searchlight used hitherto by warships these shells contain calcium carbide and tile the water can re reach ach them through jig h a tube the shells are fired by a gun bu built it specially for the be purpose on being fired tile the shell goes goas under water and then rises to the surface and the action ot of the water upon tile the calcium carbide produces pio Pid duces the he acetylene light each shell shelf Is lieve h ave candle power dower and will burn for hours bours |