834 



Static Electricity. 



No. 60613- 



60 614 A. 



60 614 B. 



60 620. 2 : 5. 



60 623. 1 : 5. 



60.613. Condenser, as No. 60,611, very massive pattern, Figure on p. 833, without micro- s- d. 

 meter adjustment for the plate distance 6. 10. 



60.614. Cylindrical Condenser, as suggested by Gerdium, Pigs. A and B, permitting of a 

 measurable variation of capacity between 20 and 500 cm (Ztschr. f. d. phys. u. chem. 



U. 18, p. 291; M. P. 10 th edn., IV, 1, Figs. 186 and 187) '. 7. 0. 



60.615. idem, with Certificate of Calibration of the Physikalisch-Technische Eeichs- 

 anstalt 8. 5. 



60.620. Spark Micrometer, as suggested by Eiess, Figure (M. P. 9 th edn., Ill, Fig. 202), 

 comprising 2 metal spheres on glass pillars, 1 of which can be adjusted by a micrometer 



screw in a graduated .slider 2.10.0 



60.621. Discharger, simple, with ebonite handle 0. 4. 



60.622. - - idem, with 2 ebonite handles and knuckle joint, Figure (Gan.-Man. Fig. 655; 

 Gan.-Eein. Fig. 761) 0. 8. 



60.623. -- idem, with 1 glass handle and knuckle joint, span 35 cm. Figure . , . o. 10. 



60.624. Discharger, as suggested by Eiess, Figure (W. D., Fig. 468 [443]; Gan.-Eein., 



Fig. 772), for Leyden jar batteries, on iron base 1. 0. 



Cl. 5678, .1077, 2182, 

 2181,2183. 



