The Astronomical Journal, Vol. 21: April, 1900 to August, 1901, Numbers 481 504 (Classic Reprint)

Excerpt from The Astronomical Journal, Vol. 21: April, 1900 to August, 1901, Numbers 481 504

In 1865 the Transit Circle was dismounted, the principal parts separated, and the central cube of the telescope was perforated in order to allow one collimator to be seen from the other without raising the pivots out of the Vs. As the work was thus interrupted, the results for 1865 were omitted from the investigation.

For the purpose of comparing results it was deemed desirable to collect the annual results into groups. There fore the periods from 1851 to 1864 and from 1866 to 1893 were divided into two and four groups, respectively, of seven years each.

In considering observations of this character it should be borne in mind that the accuracy and agreement attained in direct observations alone are not to be expected.

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