Autograph Letter Signed, to C.J.Partington, about Lectures at the Mechanics Institution, difficulties with “Optical Instruments”, the need for “a piece of Glass of sufficient dimensions that should be perfectly homogeneous”. 2 pp. 10 x 8 inches, paper lightly toned. 24 January 1825. Lieutenant William Samuel Stratford R.N. (1791-1853), astronomer, author of On the Elements of the Orbit of Halley’s Comet: At Its Appearance in the Years 1835 and 1836 (1837). He joined the Royal Navy in 1806 under the command of Sir Sydney Smith. In 1815, he retired at half-pay with the rank of lieutenant. Stratford won a silver medal from the Royal Astronomical Society in 1827; this was the second and last occasion on which such medals were awarded, with the society awarding only gold medals thereafter. He was Secretary of the society from 1825 to 1831. From 1831 until his death he was Superintendent of HM Nautical Almanac Office. He was elected a Fellow of the Royal Society in June 1832.