OF FERRUGINOUS BODIES. O5Y7 
103. The results of the several series of ex- 
periments, hitherto enumerated, appear to me to 
be conclusive evidence regarding the entire ab- 
sence of magnetic powers in ferruginous bodies, 
when highly charged with calorific matter ; and 1 
cannot avoid regarding them in the important 
capacity of so many experimental demonstrations 
of the calorific matter, being capable of expelling 
the whole of the magnetic matter from ferruginous 
bodies; and, consequently, as unexceptionable 
evidence of the perfect distinction of their phy- 
sical characters and attributes. 
104. Whilst these investigations were going on, 
others, no less important, presented themselves to 
my mind, and the experimental results happened 
to correspond with the views I had taken. They 
are perfectly novel; and, I believe, were never 
before thought of by any other experimenter. 
105. The facts on which I reasoned were these, 
1st. That a bar of iron, as I have shown, (80-83), 
can be formed into several distinct magnets, by 
the introduction of calorific matter to intervening 
portions of the iron; the whole bar being under the 
feeble polarizing force of terrestrial magnetism. 
And 2nd. That, as has long been known, every 
