244 PECULIARITIES IN THE MAGNETISM 
79. In pursuing the views I had already taken 
respecting the complete expulsion of the magnetic 
matter by means of heat, (66-71) it appeared 
likely that a bar of iron might be converted into 
a series of distinct magnets by heating it to a 
high temperature in several different parts, and 
permitting the intervening parts to remain com- 
paratively cool, or below that temperature at 
which magnetic action was complete, in the pre- 
viously conducted experiments: (55-62), and being 
desirous of embodying in this memoir all the facts 
I could collect on this topic, I called on Mr. 
Fothergill, who had assisted me in all the previous 
experiments, about one o’clock this afternoon, to 
request his assistance again in procuring me a 
few more heats of the iron. This request was 
readily assented to, and the following experiments 
were made, at the Atlas Works, after four o’clock 
this evening. 
EXPERIMENT 8. 
80. The solid iron bar, No. 1, two feet long, 
was heated to a high degree of redness at one of 
its ends to nearly the middle of the bar, whilst the 
other part was kept comparatively cool, and 
afterwards still further cooled by immersion in 
