258 W. Crookes— Radiant Matter. 
another; but if they are simply built up of negatively electri- 
fied molecules they will repel each other. 
I will first connect the upper negative pole (a) with the coil, 
and you see the ray shooting along the line d,/ I now bring 
the lower negative pole (b) into play, and another line (¢, h) 
darts along the screen. But notice the way the first lien 
behaves; it jumps up from its first position, df, to dg, showing 
that it is repelled, and if time permitted I could show you 
that the lower ray is also deflected from its normal direction: 
therefore the two parallel streams of Radiant Matter exert 
mutual repulsion, acting not ‘like current carriers, but merely 
as similarly electrified bodies. 
Radiant Matter produces heat when its motion is arrested. 
During these experiments another property of Radiant Mat- 
ter has made itself evident, although I have not yet drawn 
mee non: to: a6 ass gets very warm where the green 
phosphorescence is strongest. The molecular focus on the 
tube, which we saw earlier in the evening (fig. 6) is intensely 
hot, and I have prepared an apparatus by which this heat at 
the focus can be rendered apparent to all present. 
have here a small tube (fig. 14, a) with a cup-shaped 
negaisve. pole, -Thie.cup projects the rays to a focus in the 
middle of the tube. At the side of the tube is a small electro- 
magnet, which I can set in action by touching a key, and the 
focus is then drawn to the side of the glass. tube (fig. 14, 0). 
show the first action of the heat I have coated the tube 
ns to disintegra and cracks are shooting starwisé¢ 
from the * : g h 
center of heat. The glass is softening. Now the 
