Agenda, meeting of the Physiology and Medical Sciences Sectional Committee Lists committee business, including arrangements for the publication of papers; nominations to replace members of the Committee (Dr C H Andrewes, Sir Frederic Bartlett, Dr G L Brown, Professor F J W Roughton); papers passed by the Chairman and Secretary: F R W Brambell, FRS, W A Hemmings, M Henderson and W T Rowlands, 'The selective admission of antibodies to the foetus by the yolk-sac splanchnopleur in rabbits'. R M C Dawson and D Richter, 'The phosphorus metabolism of the brain'. Communicated by D Keilin, FRS. A V Hill, FRS, 'Does heat production precede mechanical response in muscular contraction?' Paper recommended by two referees: H G Woodruff and M F A Woodruff, 'The transplantation of normal tissues. With special reference to auto- and homotransplants of thyroid and spleen in the anterior chamber of the eye, and subcutaneously, in the Guinea pig'. Communicated by C H Kellaway, FRS. 19 January 1950