808 



Static Electricity. 



NIL (ill 246 



60252. 1:7. 



60 249. 1 : 7. 



60253. 1:10. 



60 258. 1 : 6. 



60.246. Aluminium Leaf Electroscope with Lead Cap (W. D., Fig. 438 [411]) and glass vessel, 



for the same experiment 0. 10. o 



60.247. Lead Cap alone, fitting No. 60,176 0. 3. () 



60.248. Faraday's Muslin Net, for the same experiment (M. P. 10 lfi edn., IV, 1, Fig. 129; 9" 1 edn., 



Ill, Fig. 130; Gan.-Eein., Fig. 720) 0. 8. 



60.249. Leyden Jar with large Hollow Ball having a wide opening, and with Test Ball, F i g u r <, 



for the same experiment 0. 12. 



60.250. Apparatus for the same experiment, consisting of a metallic hemisphere on base and 

 a spherical dish for covering the same at some millimetres distance from the top, tin- 

 dish having a metal pin with insulating handle for establishing a metallic connection 



with the hemisphere (Gan.-Eein., Fig. 718) 1. 0. 



60.251. Wire Cage in the form of a cheese-plate cover, with a vane inside and outside, tot 



the same experiment, on insulated stand 0. 15. o 



0(1,252. Wire Spiral with ebonite handle and pithballs, as suggested by Kebenstorff, for 

 showing that a free charge is not present in the interior of a hollow body, Figure. 



without the elect ropliorus illustrated (. 6. 



The wire spiral is placed upon a charged electrophorus and the balls are placed inside: they 

 remain motionless as no free charge is present here. If. however, the spiral is compressed, the balls 

 fly apart. 



0(1,253. Lippmann's Apparatus for Demonstrating the Equality of Induced and Inducing Elec- 

 tricity and the Screen Action, Figure (Fr. phys. Teclwi. II, 1, Fig. 143; Can. -Man.. 



Fig. 030). Price, without the electroscope illustrated 2. 5. 



The illustration shows the twn experiments which can lie carried out with the apparatus. The 

 experimental arrangement on the rifjht hand side shows the complete apparatus and also an electro- 

 scope not included in the price. 



ci. M74, -'<>:u. 



