Minute of a meeting of the Subcommittee of the Royal Society for conducting a Series of Experiments on the manufacture of Glass for Optical uses, relating to the permits of Messrs Pellatt and Green Present: Mr Dollond; Mr Faraday; Mr Herschel Present by invitation: Mr Pellatt; Mr Green Read minutes of the last meeting Iron doors ordered for closing up the arches of the furnace Proofs of parts of the pots taken in the presence of the Sub-committee Mr Hudson directed to form a collection of the Specimens from the slags, broken glass and other products presenting any remarkable peculiarity, properly labelled Ordered Furnace to be tested to the greatest intensity of heat Mr Hudson ordered to enter these and the former and future minutes in a book to be kept for that purpose. 3 June 1825