Macmillan's Science Monographs 



VOLUMES READ T— Continued. 

 STUDIES IN TERRESTRIAL MAGNETISM. 



By C. CHREE, M.A., ScD., LL.D., F.R.S. Ss- net. 



.4 7:ff£'A''^"6W.—" The.'e ' Studies' are not suited to the requirements of the 

 beginner in the subject, but rather to those of the advanced student or the professional 

 magnetician. Such readers will find a mass of interesting details in the book." 



STUDIES IN RADIOACTIVITY. By Prof. W. H. 



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

 Leeds. 5s. net. 



THE COTTON PLANT IN EGYPT : STUDIES 



IN GENETICS AND PHYSIOLOGY. By W. LAWRENCE BALLS, 

 M.A., Botanist to the Egyptian Government Department of Agriculture. 



VOLUMES IN PREPARATION. 

 IMPROVEMENT OF WHEAT AND OTHER 



CEREALS. By R. H. BIFFEN, Professor of Agricultural Botany in the 

 University of Cambridge. 



THE ASCENT OF SAP. By Prof. H. H. Dixon, 



Professor of Botany in the University of Dublin. 



THE ORIGIN OF ORE DEPOSITS AND THE 



EXTENT OF FUTURE SUPPLIES. By Dr. J. W. GREGORY, F.R.S., 

 Professor of Geology in the University of Glasgow. 



SOLAR RESEARCHES. By Dr. G. E. Halk, 



For. Mem. R.S., Director of the Solar Observatory of the Carnegie Institution 

 of Washington. 



THE SHAPE OF THE EARTH. By Dr. A. E. H. 



LOVE, F.R.S., Sedleian Professor of Natural Philosophy in the University of 

 Oxford. 



HYDROGRAPHY OF THE NILE BASIN. By 



Capt. H. G. LYONS, F.R.S. 



TRYPANOSOMES AND ALLIED ORGANISMS. 



By Prof. E. A. MINCHIN, Professor of Protozoology in the University of 

 London. 



WIND PRESSURE. By Dr. T. E. Stanton, National 



Physical Laboratory. 



RESEARCHES IN MAGNETO - OPTICS. By 



Dr. P. ZEEMAN, Professor of Physics in the University of Amsterdam. 

 And many others. 



MACMILLAN AND CO., LTD., LONDON. 



