An interesting experimental study of the effects of sensory stimuli upon the manifest dream content; the novel feature as compared with most previous investigations of this kind being that the stimuli were of very low intensity, either a piece of gummed paper 2 cm. square ('tensor' stimuli) or some oily matter, such as glycerine, ointment or butter ('detensor' stimuli).

When these stimuli were applied to some selected part of the body before going to sleep, their effect upon the content of the subsequent dreams was nearly always detectable. In the case of 'tensor' stimuli the part of the body stimulated either played a directly important part in the dream or gave