68 



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



MIO 

 CLANC 

 CEll 



No. 976. 



No. 980. 



No. 994. 



972. 



973. 

 960. 

 961. 

 8040C. 

 976. 



977. 



978. 



8040C, 



980. 



981. 

 982. 

 983. 

 984. 



985. 

 986. 

 987. 

 988.. 



989. 

 990. 

 991. 

 994. 



995. 

 950. 

 997. 



BATTERY, Fuller, improved form, for open or closed circuit work. E. M. F. about 2 volts; initial 

 internal resistance about 0.25 ohms. Gallon size, complete without chemicals $2.00 



CARBON AND COVER for No. 972 90 



ZINC for No. 972 60 



POROUS CUP for No. 972 '. 50 



GLASS JAR, 6x8 inches, for No. 972 40 



BATTERY, Gravity, Crowfoot Type, especially adapted for closed circuit work. Standard type 

 for telegraph companies. E. M. F. about 1.1 volts; internal resistance from 1 to 5 ohms. Gal- 

 lon size, complete without chemicals 1.20 



COPPER for No. 976 17 



CROWFOOT ZINC, with connector, for No. 976 70 



GLASS JAR, 6x8 inches, for No. 976 40 



BATTERY, Grenet, French Type, pint size. Most convenient form for use on lecture table, giv- 

 ing very powerful current for a short time. The E. M. F. is 2 volts at the start. Small inter- 

 nal resistance. Height of cell 8 inches. Complete without chemicals 2.00 



15 



25 



.60 



CARBON for No. 980 



ZINC for No. 980 



GLASS JAR for No. 980, complete with brass ring 



BATTERY, Grenet, French Type, one-quart size. 10 inches high. Complete without chemicals. 



2.50 



CARBON for No. 984 



ZINC for No. 984 



GLASS JAR for No. 984, complete with brass ring 



.20 

 .30 

 .90 



BATTERY, Grenet, French Type, two-quart size. 12 inches high. Complete without chemicals. 

 3.35 



CARBON for No. 988 35 



ZINC for No. 988 , 40 



GLASS JAR for No. 988, complete with brass ring 1.20 



BATTERY, Le Clanche, for open circuit work. Initial output. 2 to 4 amperes at 1.45 volts. Com- 



65 



50 



08 



.17 



plete with chemicals 



POROUS CUP, sealed, for No. 994, complete with chemicals 



ZINC ROD with binding screw for No. 994 



GLASS JAR for No. 994. . 



