A preliminary account of some interesting experiments in which the subject's psycho-galvanic reflexes were studied while he wrote down his dreams, read the account he had written, or made free associations to this account; an endeavour being made to correlate the galvanometric record with the various items of the dream records or of the free associations. In conformity with the knowledge we already possess concerning the psychological significance of the psycho-galvanic reflex, the more emotionally significant parts of the associative material were found to correspond to periods of marked galvanometric deflection.

Suggestions are made (pp. 24, 42, 43) as to certain ways in which the use of the psycho-galvanic reflex may help to throw light on various problems connected with the dream process.