Macmillan's Science Monographs 



8vo. 



VOLUMES ALREADY PUBLISHED 



CRYSTALLINE STRUCTURE AND CHEMICAL 



CONSTITUTION. By A. E. H. TUTTON, D.Sc, M.A. (Oxon.), 

 F.R.S., A.R.C.Sc. (Lond.), President of the Mineralogical Society; Member 

 of the Councils of the Chemical Society and the British Association for the 

 Advancement of Science. 5.?. net. 



STABILITY IN AVIATION. An Introduction to 



Dynamical Stability as applied to the Motions of Aeroplanes. By 

 G. H. BRYAN, Sc.D., F.R.S., Professor of Pure and Applied Mathematics 

 in the University College of North Wales, formerly Fellow of Peterhouse, 

 Cambridge. $s. net. 



STUDIES IN TERRESTRIAL MAGNETISM. 



By C. CHREE, M.A., F.R.S., Sc.D. (Camb.), LL.D. (Aberdeen), Super- 

 intendent of Kew Observatory ; Late Fellow of King's College, Cambridge ; 

 Ex-President Physical Society of London. 55. net. 



STUDIES IN RADIOACTIVITY. By W. H. BRAGG, 



M.A., F.R.S., Cavendish Professor of Physics in the University of Leeds; 

 formerly Elder Professor of Mathematics and Physics in the University of 



Adelaide. $s. net. 



THE COTTON PLANT IN EGYPT : STUDIES 



IN PHYSIOLOGY AND GENETICS. By W. LAWRENCE BALLS, 



M.A., Fellow of St. John's College, Cambridge ; Membre de l'Institut Egyptien ; 

 Botanist to the Department of Agriculture, Egyptian Government. $s. net. 



RESEARCHES IN MAGNETO - OPTICS. With 



Special Reference to the Magnetic Resolution of Spectrum Lines. By 

 P. ZEEMAN, Sc.D., Ph.D., D.Sc. Nobel Laureate ; Professor of Experimental 

 Physics in the University of Amsterdam. 6s. net. 



STUDIES IN WATER SUPPLY. By A. C. 



HOUSTON, D.Sc, M.B., CM., Director of Water Examination, Metro- 

 politan Water Poard. $s. net. 



STELLAR MOVEMENTS AND THE STRUC- 

 TURE OF THE UNIVERSE. By A. S. EDDINGTON, M.A. (Cantab.), 

 M.Sc (Manchester), B.Sc (Lond.), F.R.S., Plumian Professor of Astronomy, 

 University of Cambridge. 6s. net. 



TRANSPIRATION AND THE ASCENT OF SAP 



IN PLANTS. By HENRY H. DIXON, Sc.D., F.R.S., University 

 Professor of Botany in Trinity College, Dublin ; Director of Trinity College 

 Botanic Gardens. 



IN THE PRESS 

 THE MUTATION FACTOR IN EVOLUTION; 



WITH PARTICULAR REFERENCE TO CENOTHERA. By Dr. R. R. 

 GATES, Lecturer in Biology, St. Thomas's Hospital. 



LONDON : MACMILLAN AND CO., LTD. 



