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of a Light seen in the dark Part of the Moon. 
I observed its eclipse at the moon's dark limb at 6 h 47' 30", 
and its emersion from the moon's bright limb, at 7 h 30° 3" 
mean time, at Greenwich.* 
The appearance of the spot of light upon the moon's dark 
part, and its subsequent sudden disappearance at Norwich, 
happened near eight o'clock ; and the observation of the star 
upon the moon at St. John's Square happened about the same 
time. I would then ask the persons who make the objection, 
how could two persons, at two distant places, see a star appear 
upon the dark part of the moon, at a considerable distance 
within its circumference, while it was really off it, especially as 
they were both long sighted ? and particularly, how could the 
immersion be observed near eight o’clock, which really hap- 
pened at 54 minutes past six, or above an hour before ? If it 
be supposed that the persons saw Aldebaran after its emersion 
from the moon's bright limb, that is, after half past seven, it 
becomes still more difficult to conceive, that a star, really on 
the bright side of the moon, should, by some illusion or optic 
fallacy, cross that bright part to appear upon the dark part 
besides, this supposition does not account for the sudden dis- 
appearance of the star. 
Mr. V 1 noe has lately informed me, that he had seen and 
conversed with Mr.. Wilkins on the subject; who expressed 
himself to be certain both of the time, and place on the dark 
part of the moon's disc, where he saw the star-like appearance 
within the circumference. 
* The immersion at Norwich, on account of the difference of parallax, would happen- 
about a minute and an half later,. and the emersion as much sooner; and considering 
also the difference of meridians, by which Norwich is five minutes of time to the east 
of Greenwich, the immersion at Norwich must have happened at 6 h 54/, and the emer- 
sion at 7 h 33' mean time.. 
