CENTBAL SCIENTIFIC CO., CHI , 'AGO, TL S. A. 



69 



1000. 



1001. 

 1002. 

 1003. 

 1004. 

 1005. 

 1006. 

 1008. 



1010. 

 1011. 

 1012. 

 1013. 



1014. 

 1016. 



1017. 

 1018. 

 1019. 

 1020. 



1021. 

 1023. 

 1024. 



No. 1008. 



No. 1016. 



No. 1020. 



BATTEEY, Cenco Plunge, Single Cell. A powerful, compact form of the bichromate battery, ex- 

 pressly designed for laboratory and lecture table work. Elements can be quickly lifted out of 

 the solution when not in use. Fiber top, with nickel-plated brass trimmings. Large zinc and 

 carbon elements placed close together, reducing the internal resistance to a minimum. Initial 



E. M. F., about 2 volts; internal resistance when freshly charged, 0.15 ohms $2.75 



BATTEEY, Cenco Plunge, Two Cells, in case with handles 6.50 



BATTERY, Cenco Plunge, Four Cells, in case with handles 12.50 



BATTEEY, Cenco Plunge, Six Cells, in case with handles 18.00 



CAEBON PLATE for Cenco Plunge Battery, 4x3x^4 inches 25 



ZINC PLATE for Cenco Plunge Battery, 4%x3x% inches 40 



GLASS JAE for Cenco Plunge Battery, 4x4x8 inches 55 



BATTEEY, Laboratory Plunge, Four Cells. Similar in construction to the Cenco Plunge Battery 

 described above, the essential difference being in the elements, which are larger, and the ease, 

 which has an easy lifting motion, with a deadfall catch not liable to slip. The elements are 

 quickly removed from the solution. Each cell may be used singly, two or more in series, or in 

 parallel. Any cell which is not required for use can be suspended by the hook from the axle. 

 All parts are interchangeable. Unquestionably the best battery for the lecture table. Initial 

 E. M. F., about 2 volts per coll; internal resistance when freshly charged, 0.15 ohms. Complete 



with case 14.00 



BATTEEY, Laboratory Plunge, Six Cells. Same description as No. 1008. Complete in case 18.00 



CAEBON PLATE for Laboratory Plunge Battery, 6^x2%x% inches 25 



ZINC PLATE for Laboratory Plunge Battery, <H4x2i/x% inches 60 



ELEMENTS COMPLETE for Laboratory Plunge Battery. Two carbon plates, zinc plate, fiber 



top, binding posts and hooks ~. 1.65 



GLASS JAE for Laboratory Plunge Battery, 2%x4i/J x7 inches 55 



BATTEEY, Samson No. 2. A popular battery for open oircuit work. It is the best, most durable 

 and effective of all cells of the carbon cylinder type. Eecuperates very quickly. Dimensions 

 over all, 4%x4%x8 inches. E. M. F., 1.5 volts. Internal resistance abo'ut 0.07 ohms. Complete 



with chemicals . . . .< 2.25 



CAEBON, for No. 1016 1.25 



ZINC CYLINDEE, for No. 1016 , .75 



GLASS JAE, for Xo. 1016 35 



BATTEEY, Samson No. 3. Same as No. 1016, but larger. Dimensions over all, 5*4x51/4x8% 

 inches. E. M. F., 1.5 volts. Internal resistance about 0.06 ohms. Complete with chemicals. 



3.00 



CAEBON, for Xo. 1020 



ZINC CYLINDEE, for No. 1020. 

 GLASS JAE, for Xo. 1020 



1.50 

 .95 

 .75 



