Papers passed for publication [Proceedings] Lists papers passed by the Physiology Committee: P D F Murray, 'The control of beating and of micro-fibrillation by means of potassium, calcium and sodium in the chick embryo heart. I. Calcium fibrillation and the control of beating'. Communicated Sir Henry Dale, FRS. E Watchorn, P D F Murray, 'Loss of potassium from embryonic chick hearts in potassium-free media with and without calcium'. Communicated by Sir Henry Dale, FRS. D Keilin, FRS, and E F Hartree, 'On the mechanism of the decomposition of hydrogen peroxide by catalase'. p143. December 1937