produced in Iron Wires by Magnetization. 351 



standing on a stone slab that rested on two brick piers. A 

 hob was cut in the slab so that the wire could be passed 

 through it, and the free end permitted to almost reach the 

 floor of the room. A hollow brass cylinder 1*6 centim. in 

 diameter and about 68 centim. long (fig. 1) was screwed to 



Fy.Z. 



DC TAIL or LCVCft. 



D 



the wire at a point a, a short distance above the stone slab ; 

 a loosely fitting cork plug in its open upper end served to 

 keep the wire in the axis of this cylinder. To the cylinder 

 was screwed the brass arm deb. At e was screwed a hard 



