Letter, from Sir John Herschel to Francis Baily, dated at Collingwood Autograph letter signed by sender. Encloses observations on a comet by Carl Bremiker for the next meeting of the Royal Astronomical Society Will be unable to attend many of the meetings for this session. F. W. Bessel has lost his only son. C. F. Gauss's researches into the motion of the sun. 8 November 1840