No. 80 337. 



Electrostatic Apparatus as suggested by Kolbe. 



813 



60 325 A. 1:5. 



60 325 B. 1:8. 



60 337. 1 : 4. 



60334. 1:10. 



Mica Plates for Condensers, singly. 



List No. 60,320 60,321 60,322 

 Diameter mm 120 150 190 



Each 0. 1. 0, 2. 6 0. 5. 



60,200 a. Small Auxiliary Electroscope, on base (Fig. 34), Fig. 60 200 a on p. 802 .... 



(ill, 324. Standard Condenser (Fig. 37), for screwing on aluminium electroscope No. 60,183, 

 80 mm diameter, polished quite plane and varnished, in case, for calibrating the 

 electrometer 



60.325. Capacity Meter, Figs. A and B (Fig. 42), for Leyden jars, hollow balls, etc., without 

 the Leyden jar and electrometer illustrated in Fig. B 



For the experiment the extra ebonite plug with the paper leaf must be inserted in the electrometer. 



60.326. Air Condenser, on Stand, (Fig. 43) with sliding plates and millimetre graduation . 



60.327. Paraffin Plate, 180 mm in diameter, 20 mm thick, with ebonite handle, for the Air 

 Condenser . . 



60.328. Ebonite Plate, 180 mm diameter, 10 mm thick 



60.329. Mica Disc, 180 mm in diameter, 1 mm thick 



60.330. Mica Disc, thin, lacquered on both sides 



60,540. Apparatus for Igniting Ether or the like (Fig. 47), F i g. 60,540 on p. 826 . . . 



60,388. Model of a Dubrowsky Influence Machine, Figs. 60,388 A and B on p. 817, with 

 fixing clamp (Fig. 48, see also Ztschr. i. d. phys. u. chem. U. 9, p. 223), with an 

 exciter plate, a Leyden jar and connecting leads, without Geissler tube 



60,333. Small Amalgamated Zinc Plate with hook (Fig. 53) 



iio..'13-l. 2 Induction Spirals, Figure (Fig. 57), on ebonite plates with handles, for demon- 

 strating electric induction (Gan.-Kein., Fig. 969) 



60,335. Candle Holder with ebonite handle and platinum wire (Fig. 60) 



<i(i. :>3<. Paraffin Block for insulating the electrometer (Fig. 60) 



<;<.. ">37. Apparatus for Electric Lines of Force, Figure (Fig. 62), with brass ring fur screen 

 effect . 



s. d. 



0. 3.0 



0. 18. 



1. 8. 



2. 5.0 



0. 3.0 

 0. 6.0 

 0. 6. 

 0. 4.0 

 0.10. 



2. 8.0 



0. 0.6 



1. 4. 

 0. 4.0 



0. 6. 



0. (i. 



Cl. 5585, 2118 

 5417, 2119. 



