Holzman remarks on the close resemblance between the theoretical results of the experimental work of Poetzl, Fisher, Shevron and Luborsky, and Klein and his associates on subliminal and peripheral stimulation and its possible relation to the indifferent impressions or day residues found in dreams. Dreams, hypnosis, hypnagogic states, and the effects of mescaline seem to enable incidental impressions to be re-experienced with considerable intensity. The suggestion by Breuer that stimuli registered during these hypnoid states undergo a fate different from that of stimuli registered during full consciousness bears a startling similarity to the theories of subliminal perception.