298 



/,'. Will id id. x — Elect roiiuujuittc Effect. 



tube it would be pressed up against tbe top of the bore of the 

 tube and at the opening of the vertical tube would be bent up, 

 making the wire to appear to rise in the vertical tube. If 

 either current or field is reversed the wire would fall for the 

 same reason. A good illustration of these filaments is found in 

 the effect of an electric field upon some finely broken kernels of 



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•3 



P\ 



K 4i 



FIG.1 



o 



FIG. 3 



A BC D 



<y 



FIG. 4 



FIG. 5 



halloysite, which is a compound of aluminium silicate and a 

 very small amount of iron, nickel, cobalt, and manganese. I 

 found that the small particles of halloysite (size of pinheads) 

 when placed in an electric field such as one gets between the 

 poles of a static machine, arrange themselves in filaments and, 

 as one pulls the poles farther and farther apart, a chain of these 



