The principal part of the calculations remaining at the
date of the last Report was that applying to the determination of the
geographical longitudes of fundamental stations. At the moment of my
writing, the last of these (the longitude of Observatory Bay,
Kerguelen) is not absolutely finished:... The method of determining
the geographical longitude of the principal station in each group by
vertical transits of the Moon has been found very successful at
Honolulu and Rodriguez. For stations in high south latitude,
horizontal transits are preferable.--As regards the Numerical Lunar
Theory: With the view of preserving, against the ordinary chances of
destruction or abandonment, a work which is already one of
considerable magnitude, I have prepared and have printed as Appendix
to the Greenwich Observations (with additional copies as for a
separate work) the ordinary Equations of Lunar Disturbance, the novel
theory of Symbolical Variations, and the Numerical Developments of the
quantities on the first side of the Equations.--At various times from
February to May I was engaged on the reduction of Malta Tides, and on
a Paper concerning the same.--In July I was awarded the Albert Medal
for my Compass corrections, and received the same from the Prince of
Wales.
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