288 



CENTEAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



No. 6910. 



No. 6908. 



No. 6924. 



Nos. 6916-18. 



6908. GAS GENERATOR for Oxygen, of metal, 9% inches high; weight, 2% pounds. Generates a 

 steady supply of pure oxygen from Oxone or peroxide of sodium in cartridge form. The 

 cartridges come in hermetically sealed tin cans, which, when placed in the generator, are 

 punctured. Each cartridge will furnish about 14 or 15 gallons of oxygen, which, if passed 

 through a wash bottle containing water, will be 100 per cent. pure. As it comes from the 

 generator it is 99.3 per cent, pure $17.50 



6909. CARTRIDGES for No. 6908. 



Each 



Per box of 20 



.60 

 5.00 



6910. GAS GENERATOR, Oxygen, "Autogenor," high pressure, for producing a supply of pure oxygen 



from oxone at pressures up to 50 pounds. Complete as illustrated 27.00 



6911. OXONE, for No. 6910 in round cakes weighing 6% to 7 ounces and yielding 1 cubic foot each; 



in tins of 6 cakes per tin 1,25 



6912. GAS GENERATOR, Hydrogen, "Autogenor," same as No. 6910, but with special arrangement 



for generating pure hydrogen from Hydrone 28.00 



6913. EXTRA HOLDER for No. 6912, for use with Oxone. By the purchase of this extra holder, the 



same generator may be used for both hydrogen and oxygen 1.00 



6914. HYDRONE for No. 6912, in tins holding 2 pounds and yielding 26 cubic feet per pound. 



Per tin , 2.50 



GAS GENERATOR, Retort, for oxygen, see Retorts, Copper, No. 11462. 



6916. GAS HOLDERS (Gasometer), Pepys-Berzelius, improved form, made of heavy zinc, with brass 

 fittings and water gage. 



Capacity, gallons 5 10 



Each 25.00 30.00 



6918. GAS HOLDERS (Gasometer), Pepys-Berzelius, same as No. 6916, but of heavy copper. 



Capacity, gallons 5 10 



Each 30.00 37.50 



For CONSTANT PRESSURE GAS HOLDER, see No. 6814. 



6924. GAS LIGHTER, improved, producing by friction a flash of hot sparks, which will light any 

 kind of gas or inflammable vapors 50 



6925. SPARK METAL RENEWAL for No. 6924. 



.25 



