Minutes of the meeting of the Optical Subcommitte of the British National Committee for Physics In the rooms of the Royal Soc9iety Present: Mr T Smith [Chairman] 1. Minutes of the meeting held on 14 january 1948 confirmed 2. Matters arisiing from t he Minutes 2a. Chairman 2b. MEmbership of the Committee 2c. International Opticval Commission, Delft 12-18 July 1948 2d. Projects arising from the Prague meeting (see domument SO 47-4) 1. Symbols and Terminology ii. Drawings and Notation for Tolerance on Optical DEsign and Specifications iii. Documentation iv. Reports on work done dujring the wqar years v. Lists of Optical Workers and Manufacturers vi. Classification vii. Study of the Properties of the Eye viii. General Study of Aberrations without diffraction ix. Determination of the Photographic Properties of Emulsions interesting Optical Workers 3. Technical Information on optical production methods 4. Delft meeting of the International Optical Commission 26 April 1948