Minutes of a Committee for the Improvement of Glass for Optical purposes Present at the meeting: the President in the chair; Mr Brande; Mr Dollond; Mr Gilbert; Mr Hatchett; Mr Herschel; Mr South; Mr Warburton; Dr Wollaston Members of the Board of Longitude p[resent: Captain Kater; Mr Pond; Dr Young Minutes of the last meeting were read Mr Pellatt atended and gave information as requested. ' It was ordered that the seeral analyses by Mr Faraday of different samples of Glass furnished by Mr Dollond be entered on the Minutes of the Comittee [listed]. Mr Dollond was requested to have prisms prepared of the different samples of Glass with a view to determine the refractive and dispersive Indices, which Mr Herschel was requested to determine. Adjourned till after the next meeting of the Board of Longitude. ' 24 March 1825