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P. 334
ing with Le Verrier’s prediction, and the he-
liocentric longitude agreeing within 57’. By
this time Challis had recorded, without re-
duction, the observations of 3,150 stars, as a
commencement for his search. On reducing
these, he found a star, observed on August
12th, which was not in the same place on
July 30th. This was the planet, and he had
also observed it on August 4th.
334
