The book ""On The Elements Of The Orbit Of Halley's Comet: At Its Appearance In The Years 1835 And 1836"" by William Samuel Stratford was published in 1837. The book is an in-depth study of the orbit of Halley's Comet during its appearance in the years 1835 and 1836. The author, William Samuel Stratford, was a British astronomer who was known for his work on celestial mechanics and the study of comets.The book begins with an introduction to Halley's...