Miscellaneous Intelligence. 437 
_ have been severally adduced as hypotheses affording plausible explana- 
tions. Of each and all such hypotheses the facts are the only true 
in them, is far from being yet complete. The correspondence of the 
critical epochs of the annual variation with the solstices and equinoxes 
rather than with the epochs of maximum and. minimum temperature, 
which at the surface of the earth, in the subsoil beneath the surface, or 
perature, the two hemispheres should be oppositely instead of similarly 
affected in each of the two periods referred to. Still, there are doubt- 
appreciable by our instruments or inappreciable by them, 1s a question 
which yet remains for solution by the more minute sifting of the accu- 
quarters. : ads 
To justify the anticipation that conclusions of the most striking ¢ 
acter, and wholly unforeseen, may yet derivable from the materials 
i on 
p certainly at first sight 
the least explicable of all the periodical magnetic variations with whic 
Szconp Serms, Vol. XIV, No. 42.—Nov,, 1852. 56 
