XXX. EVOLUTION IN ART: As Illustrated by the Life-Histories of Designs. By Professor ALFRED C. HADDON, F.R.S. With 130 Illustrations. 6s. "It is impossible to speak too highly of this most unassuming and invaluable book."--_Journal Anthropological Institute_. XXXI. THE PSYCHOLOGY OF THE EMOTIONS. By TH. RIBOT, Professor at the College of France, Editor of the _Revue Philosophique_. 6s. "Charmingly written, and full of lucid explanation and brilliant comparison. A masterly exposition."--_British Medical Journal_. XXXII. HALLUCINATIONS AND ILLUSIONS: A Study of the Fallacies of Perception. By EDMUND PARISH. 6s. "The most comprehensive and most scientific work on false perception that has up till now been written in any language."--_Journal of Mental Science_. XXXIII. THE NEW PSYCHOLOGY. By E. W. SCRIPTURE, Ph.D. (Leipzig). With 124 Illustrations. 6s. "We have at present no work in English which gives in so compact a form so comprehensive a view of the subject."--_Liverpool Post_. XXXIV. SLEEP: Its Physiology, Pathology, Hygiene, and Psychology. By MARIE DE MANACÉÏNE (St. Petersburg). Illustrated. 3s. 6d. "The book is a complete and wonderfully interesting exposition, and as such ought to receive a hearty welcome."--_Scotsman_. XXXV. THE NATURAL HISTORY OF DIGESTION. By A. LOCKHART GILLESPIE, M.D., F.R.C.P. Ed., F.R.S. Ed. With a large number of Illustrations and Diagrams. 6s. "Dr. Gillespie's work is one that has been greatly needed. No comprehensive collation of this kind exists in recent English literature. All the important work that has appeared within the past few years is discussed so far as the limits of the book allow of discussion, and extremely little of value has been omitted. Not least interesting are the accounts of the author's own original work."--_American Journal of the Medical Sciences_. XXXVI. DEGENERACY: Its Causes, Signs, and Results. By Professor EUGENE S. TALBOT, M.D., Chicago. With Illustrations. 6s. "The author is bold, original, and suggestive, and his work is a contribution of real and indeed great value, more so on the whole than anything that has yet appeared in this country."--_American Journal of Psychology_. XXXVII. THE RACES OF MAN. By J. DENIKER. 6s. XXXVIII. THE PSYCHOLOGY OF RELIGION. An Empirical Study of the Growth of Religious Consciousness. By EDWIN DILLER STARBUCK, Ph.D., Assistant Professor of Education, Leland Stanford Junior University. 6s. ="The most attractive Birthday Book ever published."= _Crown Quarto, in specially designed Cover, Cloth, Price 6s._ _"Wedding Present" Edition, in Silver Cloth, 7s. 6d., in Box. Also in Limp Morocco, in Box._ =_An Entirely New Edition. Revised Throughout._= =With Twelve Full-Page Portraits of Celebrated Musicians.= DEDICATED TO PADEREWSKI. =THE MUSIC OF THE POETS:=