Papers passed for publication [Proceedings] Lists papers passed by the Chairman and Secretary of the Physiology Committee: H Selye and T McKeown, 'Studies on the physiology of the maternal placenta in the rat'. Communicated by J B Collip, FRS. G V Anrep, FRS, W Pascual and R Rossler, 'Respiratory variations of the heart rate. Part I. The reflex mechanism of the respiratory arrhythmia'. G V Anrep, FRS, W Pascual and R Rossler, 'Respiratory variations of the heart rate. II. The central mechanism of the respiratory arrythmia and the interrelations between the central and the reflex mechanisms'. G M Richardson, 'The principle of formaldehyde, alcohol and acetone titrations'. Communicated by C R Harington, FRS. D Keilin, FRS, and E F Hartree, Uricase, amino acid oxidase, and xanthine oxidase'. D Keilin, FRS, and E F Hartree, 'Coupled oxidation of alcohol'. M Dixon and D Keilin, FRS, 'The action of cyanide and other respiratory inhibitors on xanthine oxidase'. R A McCance, 'Experimental sodium chloride deficiency in man'. Communicated by E Mellanby, FRS. C G Butler and J M Innes, 'A comparison of the rate of metabolic activity in the solitary and migratory phases of Locusta migratoria'. Communicated by A D Imms, FRS. p115. November 1935