220 PECULIARITIES IN THE MAGNETISM 
32. When the lamp has been shifted from side 
to side for a few times, that force which urges the 
needle fowards the point of heat becomes van- 
quished ; after which the disturbed pole uniformly 
moves from the point of heat, in strict accordance 
with the law which governs the longitudinal move- 
ments. 
33. When the magnetized steel plate is of a 
soft temper, the lateral transplacement of the 
pole is uniformly from the point of heat, in every 
piece of steel that I have yet operated on; and 
they have been of various dimensions from one 
thirtieth, to half an inch in thickness. The latter 
thickness, however, does not allow of such facili- 
ties for polar transplacement as that of one-tenth 
of an inch and under. I had two pieces of steel 
made into a peculiar form, by Mr. Dancer, Philo- 
sophical Instrument maker, from which I had 
expected very striking results. Each piece is 
two and a half inches broad, six and a half inches 
long, and half an inch thick. They are got up in 
a very beautiful manner, but the results which I 
obtained from them were by no means answerable 
to my expectations. The metal is, in fact, too 
thick to yield to the influence of the trifling heat 
of a small spirit lamp, with the necessary rapidity 
