Papers passed for publication in the Proceedings G W Harris and Dora Jacobson, 'Functional grafts of the anterior pituitary gland'. Communicated by E D Adrian, FRS. B C Kilkenny and Sir Cyril Hinshelwood, For Sec RS, 'Adaptation and Mendellian segregation in the utilisation of galactose by yeast'. A C B Baskett and Sir Cyril Hinschelwood, For Sec RS, 'Mechanism of the training of Bact lactis aerogenes to D-arabinose'. A C E Dean and Sir Cyril Hinshelwood, For Sec RS, 'The resistance of Bact lactis aerogenes to proflavinc [2:8-diaminoacridine]. I. The applicability of the statistical fluctuation test'. A C Baskett, 'The resistance of Bact lactis aerogenes to proflavine [2:8-diaminoacridine]. II The direct induction of adaptation'. H E Davenport and R Hill, FRS, 'The preparation and some properties of cytochrome-f'. H E Davenport, R Hill FRS, F R Whatley, 'A natural factor catalyzing reduction of methaemoglobin by isolated chloroplasts'. p25. October 1951