Show for air regeneration fused boddum peroxide electrically prepared is the chemical agent in a process of air regeneration that has been beell recommended for or such purposes as submarine boats etc in contact with water pure oxygen is given oft off caustic soda being formed the soda absorbs the car carbolic bolle add acid coating the peroxide with a crust ot of carbonate I 1 which is removed by shaking the chemical in awlie net or gauze cylinder it is found that six and three fourths ounces of the peroxide give the beven 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 for or nine hours before tho the carbonic acid in the air breathed would increase to a troublesome quantity |