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and Mr. John Williams, in 1871, published
Observations of Comets from 611 B.C. to
1640 A.D., Extracted from the Chinese An-
nals .
With regard to those centuries concern-
ing which we have no astronomical Chinese
records, it is fair to state that it is recorded
that some centuries before the Christian era,
in the reign of Tsin-Chi-Hoang, all the clas-
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