Letter, from Francis Baily to Sir John Herschel, dated at 37 Tavistock Place Autograph letter signed by sender. Thanks for his invitation. N. L. Lacaille's observations are in process of reduction and work is continuing on the constellations. Regarding the project for a new observatory. Greenwich observation could probably cover a wider field if staff were increased. Has received a silver medal for John Frederick William Herschel from Wilhelm Struve. Government is to print Thomas Maclear's paper. T. G. Taylor has arrived from Madras bringing his fifth volume of observations. 10 July 1840