Sir John Herschel, who possesses in an eminent degree, the peculiar
talent of felicitously illustrating every subject that he approaches, in
his valuable _Treatise on Astronomy_, thus refers to the situation of
London as a Port:--"It is a fact, not a little interesting to
Englishmen, and combined with our insular station in that highway of
nations, the Atlantic, not a little explanatory of our commercial
eminence, that LONDON _occupies nearly the centre of the terrestrial
hemisphere_."
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