The following papers were given: 'The transient response of the ear' by Rawdon-Smith and Sturdy, 'Some phenomena of visual adaptation' by K. J. W. Craik, 'Discrimination experiments with rats' by G. C. Drew, 'Some phenomena of visual perception' by R. C. Oldfield, 'An experiment on apparent visual movement' by O. L. Zangwill, 'Industrial applications of psychology' by Farmer, Chambers, Hotopf and Heim, 'The comparative study of thinking processes' by D. M. Carmichael, 'The effect of knowledge of results on learning' by G. C. Grindley, 'Tachistoscopic perception' by M. D. Vernon.