See also:American astronomer, was
See also:born at
See also:Wilmington, Massachusetts, on the 28th of
See also:March 1805 . Graduating at Harvard in 1825, he was a teacher till 1835, was an
See also:actuary in 1835—r845, and then became assistant at the
See also:observatory . In 1847 he took
See also:charge of the longitude department of the
See also:United States
See also:Coast Survey, where he was among the first to make use of the electric telegraph for the purpose of determining the difference of longitude between two stations, and he introduced the method of registering transit observations electrically by means of a
See also:chronograph . He also investigated the orbit of the newly discovered
See also:planet Neptune . He died near
See also:Cincinnati on the 3oth of
See also:January 1853 . His
See also:brother Timothy (1802—1856) was a
See also:leader of the
See also:bar . See
See also:Memoirs of the
See also:Roy . Astr .
See also:Soc. vol.
See also:xxiii .
ROBERT JAMES WALKER (1801-1869)
THOMAS WALKER (1784—1836)
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