48 OC. F. Winslow on Tides and Earthquake phenomena. 
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quake (or plutonic) phenomena in that region of the globe, and = 
synchronism of periodic intensity of tidal movements, 
as they have been observed on the shores of Tahiti and of Peru, 
with the periodic intensity of earthquake and volcanic (plutonic) 
movements throughout the surface of the entire planet, I have 
been compelled to believe solar influence to be the predominating 
element in causal action, and that the lunar connection with ter- 
restrial phenomena is reactionary rather than direct. That the 
periodicity and intensity of manifestation of internal dynamic 
energy are connected with the position of the earth in its orbit, 
holding inverse and constant numerical relations to the length 
and sweep of the radius vector, as a general law, my observa- 
tions and researches have established beyond contradiction or 
doubt. And I have the strongest reasons to believe that sys- 
tematic observations upon the oceanic movements at Tahiti and 
other groups in the South Pacific, and upon the coasts of Peru 
and Ecuador, will lead to the discovery of most important data 
through which our present lunar theory will be greatly devel- : 
oped, and probably profoundly modified. y 
facts accumulate in different departments of observation, 
it is most interesting to discover a convergence of all terrestrial 
henomena toward a central and unique causal agency. e 
ate Prof. Kriel of Austria made many observations showing 
a connection of earthquakes with terrestrial magnetism. Dr. 
ugé of Saxony is showing some remarkable synchronisms 0: 
volcanic eruptions with solar spots and variations of the mag- 
netic needle. In connection with these important inquiries, 
rof. Lamont, the learned director of the astronomical and mag- 
netical observatory at Munich, lately informed me that some 
ears since, when instituting a series of magnetic observations . 
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surface of the planet, involving the dynamical tension of the 
air, ocean, magnetism, electricity,*and plutonic force, all vary by 
