46. MATTER AND ENERGY 



By F. SODDY, M.A., F.R.S. "A most fascinating and instructive account of 

 the great facts of physical science, concerning which our knowledge, of later 

 years, has made such wonderful progress." The Bookseller. 



49. PSYCHOLOGY, THE STUDY OF BEHAVIOUR 



By Prof. W. McDouGALL, F.R.S., M.B. "A happy example of the non- 

 technical handling of an unwieldy science, suggesting rather than dogmatising. 

 It should whet appetites for deeper study." Christian World, 



53. THE MAKING OF THE EARTH 



By Prof. J. W. GREGORY, F.R.S. (With 38 Maps and Figures.) The Professor 

 of Geology at Glasgow describes the origin of the earth, the formation and 

 changes of its surface and structure, its geological history, the first appearance 

 of life, and its influence upon the globe. 



57. THE HUMAN BODY 



By A. KEITH, M.D., LL.D., Conservator of Museum and Hunterian Pro- 

 fessor, Royal College of Surgeons. (Illustrated.) The work of the dissecting- 

 room is described, and among other subjects dealt with are : the development 

 of the body ; malformations and monstrosities ; changes of youth and age ; sex 

 differences, are they increasing or decreasing ? race characters ; bodily features 

 as indexes of mental character ; degeneration and regeneration ; and the 

 genealogy and antiquity of man. 



58. ELECTRICITY 



By GisBERT KAPP, D.Eng., M.I.E.E., M.I.C.E., Professor of Electrical 

 Engineering in the University of Birmingham. (Illustrated.) Deals with 

 frictional and contact electricity ; potential ; electrification by mechanical 

 means ; the electric current ; the dynamics of electric currents ; alternating 

 currents ; the distribution of electricity, etc. 



IN PREPARATION 



CHEMISTRY. Py Prof. R. MELDOLA, F.R.S. 



THE MINERAL WORLD. By Sir T. H. HOLLAND, K.C.I.E., D.Sc. 



PLANT LIFE. By Prof. J. B. FARMER, F.R.S. 



NERVES. By Prof. D. FRASF.R HARRIS, M.D., D.Sc. 



A STUDY OF SEX. By Prof. J. A. THOMSON and Prof. PATRICK GEDDES. 



THE GROWTH OF EUROPE. By Prof. GRENVILLK COLE. 



Philosophy and "Religion 



15. MOHAMMEDANISM 



By Prof. D. S. MARGOLIOUTH, M.A., D.Litt. "This generous shilling's 

 worth of wisdom. ... A delicate, humorous, and most responsible tractate 

 by an illuminative professor." Daily Mail. 



40. THE PROBLEMS OF PHILOSOPHY 



By the Hon. BKRTRAND RUSSELL, F.R.S. "A book that the ' man in the 

 street ' will recognise at once to be a boon. . . . Consistently lucid and non- 

 technical throughout." Christian World. 



47. BUDDHISM 



By Mrs RHYS DAVIDS, M.A. " A very able and concise ' study of the Buddhist 

 norm.' . . . The author presents very attractively as well as very learnedly 

 the philosophy of Buddhism as the greatest scholars of the day interpret it." 

 Daily News. 



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