, the opposite magnetism from its own; and repelled to the
upper end of the stove, etc., the same magnetism which exists in our
northern hemisphere. Consequently, the bottom of the stove, or of the
hinge, cup, etc., will attract the south (or unmarked end) of our
needle; while the top of the stove, etc., attracts the north, or marked
end of our magnetic needle. If we apply our needle to the T rails of a
N. and S. railroad, we not only find that the lower flange of the rail
attracts the S. end of our needle, while the upper flange attracts the
N. end of our needle, but we also find, where the two rails come nearly
together (say within two inches), that the N. end of the rail attracts
the S. end of our needle, while the S. end of the rail attracts the N.
(or marked) end of our magnetic needle."
[Illustration: MAGNETISM ON RAILWAYS.]
Quite recently, being anxious to see the effect produced on the needle
by rails laid E. and W., I experimented on some recently laid here;
starting from a S.
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