The World of Dreams

to the introspective group of dream studies and is based on notes taken during twenty years, chiefly of the author's own dream experiences, though occasionally those of immediate friends are included. There are apparently as many well known authorities who believe that deep sleep is dreamless as there are those who contend that we dream during the whole period of sleep, only we fail to remember. There are even people, who, as far as they know, never dream at all, Lessing being a famous example of this type. Mr. Ellis points out some facts about dreams, which we have all noticed, for instance, their kaleidoscopic character, the constant change and shifting of the dream image, the lack of voluntary attention, though all the characters of spontaneous attention are present, the absence in general of color and the confusion of imagery. In the chapter on the logic of dreams Mr. Ellis reminds us that