"The Encyclopedia of Dreams" contains the explanation of over 1600 dreams, all gathered from antique books. "The Phenomena of Sleep and Dream" has been written by Mr. Serjeant Cox and read at the meeting of the Psychological Society of Great Britain in 1875. The study "The Five Species of Dreams" has been written by Mme. Claire Rougemont in 1901, as an introduction to her book, "The National Dream Book".