ure him a more favourable inspection of the gentle luminary
of the night;' but 'the exciting question whether this "observed" of all
the sons of men, from the days of Eden to those of Edinburgh, be
inhabited by beings, like ourselves, of consciousness and curiosity, was
left to the benevolent index of natural analogy, or to the severe
tradition that the moon is tenanted only by the hoary _solitaire_, whom
the criminal code of the nursery had banished thither for collecting
fuel on the Sabbath-day.'[47] But the time had arrived when the great
discovery was to be made, by which at length the moon could be brought
near enough, by telescopic power, for living creatures on her surface to
be seen if any exist.
The account of the sudden discovery of the new method, during a
conversation between Sir John Herschel and Sir David Brewster, is one of
the most cleverly conceived (though also one of the absurdest) passages
in the pamphlet. 'About three years ago, in the course of a
conversational discussion with Sir David Brewster upon the merits of
some ingenious suggestions by the latter, in his article on Optics in
the "Edinburgh Encyclopaedia," p. 644, for improvements in Newtonian
reflectors, Sir John Herschel adverted to the convenient simplicity of
the old astronomical telescopes that were without tubes, and the
object-glass of which, placed upon a high pole, threw the focal image to
a distance of 150 and even 200 feet. Dr. Brewster readily admitted that
a tube was not necessary, provided the focal image were conveyed into a
dark apartment and there properly received by reflectors.... The
conversation then became directed to that all-invincible enemy, the
paucity of light in powerful magnifiers. After a few moments' silent
thought, Sir John diffidently enquired whether it would not be possible
to effect _a transfusion of artificial light through the focal object of
vision_! Sir David, somewhat startled at the originality of the idea,
paused awhile, and then hesitatingly referred to the refrangibility of
rays, and the angle of incidence. Sir John, grown more confident,
adduced the example of the Newtonian reflector, in which the
refrangibility was corrected by the second speculum, and the angle of
incidence restored by the third.'
All this part of the narrative is simply splendid in absurdity.
Hesitating references to refrangibility and the angle of incidence would
have been sheerly idiotic under the supposed circumstances;
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