begins astronomical measures (1779), [44].
joins Philosophical Society of Bath, [45].
first published scientific writing (1779), [46].
first communication to the Royal Society (1780), [47].
discovery of Uranus (1781, March 13), [49].
its effect on his career, [53].
elected a member of the Royal Society (1781), and receives the Copley medal, [56].
attempts a thirty-foot reflector, [59].
goes to London, 1782 (May, June, July), [61].
appointed Royal Astronomer (£200), 1782, [67].