e were prepared, and who had personally
witnessed our former difficulties, was present during some of these
experiments. Our own instrument being placed in his hands (Nov. 10th
to 19th) for another purpose, he spontaneously re-polished the
apparently faultless agate-bearings. To my great astonishment, the
inconsistencies of every kind have nearly or entirely vanished. On
raising and lowering the needles, they return to the same readings,
and the dips with the same needle appear generally consistent.' Some
practical details of the polishing process by which this result had
been secured are then given.--After numerous delays, the apparatus for
the self-registration of Spontaneous Earth Currents was brought into a
working state in the month of March. A description of the arrangement
adopted is given in the Report.--'All Chronometers on trial are rated
every day, by comparison with one of the clocks sympathetic with the
Motor Clock. Every Chronometer, whether on trial or returned from a
chronometer-maker as repaired, is tried at least once in the heat of
the Chronometer-Oven, the temperature being usually limited to 90 deg.
Fahrenheit; and, guided by the results of very long experience, we
have established it as a rule, that every trial in heat be continued
through three weeks.'--'The only employment extraneous to the
Observatory which has occupied any of my time within the last year is
the giving three Lectures on the Magnetism of Iron Ships (at the
request of the Lords of the Committee of Council on Education) in the
Theatre of the South Kensington Museum. The preparations, however,
for these Lectures, to be given in a room ill-adapted to them,
occupied a great deal of my own time, and of the time of an Assistant
of the Observatory.'--'Referring to a matter in which the interests of
Astronomy are deeply concerned, I think it right to report to the
Visitors my late representation to the Government, to the effect that,
in reference to possible observation of the Transit of Venus in 1882,
it will be necessary in no long time to examine the coasts of the
Great Southern Continent.'"
Of private history: "There were the usual visits to Playford at the
beginning and end of the year.--From June 18th to 26th I was on a trip
in Wales with my sons Hubert and Osmund.--From Sept. 6th to Oct. 2nd I
was staying with most of my family at Portinscale near Keswick: we
returned by Barnard Castle, Rokeby, &c."
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