Invitation and RSVP from the Joint Honourable Secretaries, the Institution of Chemical Engineers to Robert Robinson, 56 Victoria Street, Westminster 'Mr Hugh Griffiths, President, and the Council of the Institution of Chemical Engineers request the honour of the Company of the President of the Royal Society at a Luncheon to be held at the Connaught Rooms, Great Queen Street, London, W C 2 on Thursday 10th April 1947 at 12.45 p.m. for 1 p.m.' 10 April 1947