282 



CENTRAL SCIENTIFIC CO., CHICAGO, TT. S. A. 



H, 



No. 6696. No. 6698. No. 6704. No. 6730. No. 6732. No. 6736. 



No. 6740. 



No. 6720. 



No. 12900. 



6696. GAS APPARATUS, Hinman- Jenkins', for Sulphur, complete with condensing tube filled with 

 glass beads, adapters, overflow tube, watch glass, connectors and burner fitted with special 

 lava tip, but without Erlenmeyer flask. (See Technologic Paper No. 20 of the United States 



Bureau of StandarSs) $18.50 



6698. GAS APPARATUS, Referees', for Sulphur, complete as illustrated with burner and support, 



without flask 20.00 



6704. GAS APPARATUS, Ruedorff's, for determining carbon dioxide in illuminating and other gases. 

 Complete with bottle, rubber stoppers, and ground in glass tubes, with three stop-cocks 9.00 

 GAS APPARATUS, Wolpert's, for carbon dioxide in air, see No. 146. 

 6720. GAS BAGS, Rubber, oval form, without stopcock. 



Capacity, gallons 1 



Each 3.00 3.25 3.80 5.00 



12900. STOPCOCK, Brass, for No. 6720 Gas Bags. One end for attaching rubber tubing, the other a 



%x2 1 /-inch brass tube for nozzle of gas bag 90 



6722. GAS BAGS, Rubber, same as No. 6720, but with brass stopcock. 



Capacitv, gallons 1 2 3 5 



Each . .' 4.00 4.25 5.25 6.25 



GAS BALLOONS, see Balloons, Glass. 

 6730. GAS BURETTE, Bunte's, with two stop-cocks, without water jacket. Graduated from -10 to 



50 cc in Vioth, and from 50 to 100 cc in 1 cc divisions 8.00 



6732 GAS BURETTE, Bunte's, same as No. 6730, but with water jacket fitted with rubber stop- 

 pers 10.00 



6736. GAS BURETTE, Hempel's, without stop-cocks, set in heavy metal bases, with one plain bu- 



rette, and one burette graduated to 100 ce in % co divisions 9.30 



6737. GRADUATED BURETTE only of No. 6736 3.50 



6740. GAS BURETTE, Hempel-Winkler, same as No. 6736, but with graduated burette provided with 



two stop-cocks 15.00 



6741. GRADUATED BURETTE only of No. 6740 with stop-cocks 9.00 



