As the network of iron rails spreads from year to year more extensively
over our continent, it will be interesting to observe whether or not
any effect is produced, meteorological, agricultural, etc., by this
diffusion of magnetism.
It may further interest some of your readers to have attention called to
facts indicating
SYNCHRONOUS SEISMOLOGY.
The year recently closed furnishes interesting corroborative testimony
of an apparent law regarding the propagation of earthquake movements
_most readily_ along great circles of our globe, as well as evidence
that these seismic movements are frequently transmitted along belts
(approximating to great circles) coincident sometimes with continental
trends, at other times with fissures which emanate in radii at every
30 deg., around the pole of the land hemisphere in Switzerland, as described
in one of my papers, read at the Montreal meeting of the A.A.A.S.
The terms synchronism or synchronous, as here used, are not designed to
imply absolute simultaneity (although that is sometimes the case with
disturbances 180 deg.
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