45, CORNHILL, E.G., AND 122, REGENT STREET, W., LONDON. 421 



FIG. 2446. 



n 



FlG. 2447. 



FIG. 2450. 



FIG. 2451. 



u 



FlG. 2452. FlG. 2454 



Each. 

 s. d. 



' Each. 

 8. d. 

 030 



2442 Dancing Figures, made of elder pith, plain Is., jointed 020 



2443 Pith Ball Stand, another illustration of electrical 



attraction and repulsion ...... 050 



2444 Ditto, with ball and wire (fig. 2444) .... 080 

 2444* Pith Balls ....... per doz. 010 016 



2445 Grotesque Carved Head, with Hair, for illustrating the 



principle that bodies similarly electrified repel each 

 other (fig. 2445) ........ 



2446 Electrical Figure, carved of cork, representing a swan, 



which, placed on the surface of a vessel of electrified 

 water, will be attracted to any part by presenting the 

 finger to it (fig. 2446) ...... 



2447 Ditto ditto, representing Neptune, sea-horses, &c., 



(fig. 2447) ....... from 



2448 Electrical Spider, by electrifying which, and presenting 



a ball, will be attracted, but repelled by a point 



2449 Coloured Glass and Paper Plumes, to exhibit the 



repulsive action of similarly electrified bodies . 



2450 Electrical Flask, with brass cap and valve for exhaus- 



tion, to imitate the aurora borealis (fig. 2450) . . 



2451 Glass Globe, with stop-cock, sliding wire, with forceps, 



&c., for showing the passage of electric light through 

 a partial vacuum or different gases (fig. 2451) . 



2452 Luminous Conductor, or apparatus to exhibit the effect 



of a falling star, with valve for exhaustion (fig. 2452) 110 



2452* Ditto with Stop Cock, large size . . . .220 330 



2453 Bucket and Syphon to suspend from the prime conductor ; this experiment 



shows that water, which previous to being electrified only fell in drops, when 

 electrified runs in a stream, and in a dark room is luminous 3s. 6d., 5s. 6d 



040 066 



046 



076 



010 



026 056 



076 12 6 



220 2 12 6 



