Show for air fused hedlum peroxide electrically prepared is the chemical agent in a process of air regeneration that has been recommended tor for such purposes as submarine boats etc in contact with water pure oxygen Is given off caustic ic soda bells being formed the soda file car carbolic bolle acid coating the peroxide with a I 1 crust of carbonate which is by shaking the chemical lit in a wiio who net or gauze cylinder it is found that six and thred fourths ounces of the peroxide give the seven gallons of oxygen required by one man per hour and that 20 pounds should sustain nine men in a submarine of 2700 cubic feet capacity tor for nine hours before the AP carbonic acid in tho the air breathed wo wod d increase to a troublesome leEome quantity |