Xo. 60068. 



Fundamental Magnetic Experiments. 



787 



60 063. 1 : 5. 



60 065. 1 = 6. 



60 064. 1 : 6. 



60 067. 1 : 6. 



s. a. 

 60,062. Astatic Magnetic Needle, Tremery's, with stand 0. 10. 



This needle consists of two magnets, whose similar poles are turned outwards, the other poles 

 being fastened to a piece of ebonite provided with a lug. The needle is thoroughly astatic. 



60,06.3. Apparatus for explaining the Fundamental Laws of Magnetism, Figure: magnetic 

 needle on stand, compass, simple dipping needle, bar magnet, steel bars for breaking, 

 iron filings in box, with sieve and slab for sprinkling the same 1. 2. 



60,064. Apparatus for Magnetic Experiments; can also be used as a dip circle 5. 10. 



1 stand with brass base, 1 rotary needle holder, 1 needle holder for needles with caps, 1 com- 

 pass card, 1 graduated circle, 4 various magnetic needles, 1 magnetic and 1 non-magnetic iron rod, 

 with case. 



60 065. Collection of apparatus for the fundamental experiments in magnetism, frictional 



contact and thermo-electricity, in wood box, Figure 2. 6. 



The box contains: 2 magnet bars, 1 doublo hook for suspending these, 1 magnetic needle, 1 ebonite 

 rod, 1 glass rod, 1 rubbsr, 1 insulating stand, 1 elestric needle, pithballs with holder, 1 glass rod 

 with brass cap, 1 ebonite rod with brass cap, 1 Voltais coll with closing bow and one thermo-electric 

 rectangle. 



60.066. Cylindrical Nickel Piece, for magnetic experiments 0. 2. 



60.067. Magnetic Double Pendulum, Figure 0. 5. 



Two pieses of soft iron are su?p3nded vertisally from two threads on a stand. On approaching 

 one pole of a powerful magnet the iron pieie? are attrasted, at the same time repelling each other 

 smartly. 



60.068. Iron and Steel Bars, for magnetic distribution, 6 of soft iron, 6 of hardened steel, 



6 mm thick, 20 mm long . . . 0. 3. 



Cl. 3450, 5555, 



4114, 2021. 50* 



