CONTENTS. 



(A) 

 VOL. 215. 



List of Illustrations : page v 



Advertisement vii 



I. Eddy Motion in the Atmosphere. By G. I. TAYLOR, M.A., Schuster Header in 



Dynamical Meteorology. Communicated by W. N. SIIA\V, Sc.D., F.K.S., 

 Director of the Meteorological Office . 2 )a 'J ( ' ^ 



II. On the Potential of Ellipsoidal Bodies, and /he Figures of k'yiiilibrium of 



Rotating Liquid Masses. By J. H. JEANS, M.A., F.R.S 27 



III. The Influence of Molecular Constitution and Temperature on, Magnetic. 



Susceptibility. Part III. On, the Molecular Field in Dif (magnetic Substances. 

 By A. E. OXLEY, M.A., M.Sc., Coutts Trotter Student, Trinity College, 

 Cambridge, Mackinnon Student of the Royal Society. Communicated by 

 Prof. Sir J. J. THOMSON, O.M., F.R.S. 79 



IV. The Transmission of Electric Waves over (lie Surface of the. Earth. By 



A. E. H. LOVE, F.R.S. , Sedleian Professor of Natural Philosophy in the 

 University of Oxford 105 



V. Atmospheric Electricity Potential Gradient at Kew Observatory, 1898 to 1912. 



By C. CHEEE, Sc.D., LL.D., F.R.S., Superintendent of Kew Observatory 133 



VI. The Lunar Diurnal Magnetic Variation, and its CJiange with Lunar Distance. 



By S. CHAPMAN, M.A., D.Sc., Fellow and Lecturer of Trinity College, 

 Cambridge, lately Chief Assistant at the Royal Observatory, Greenwich. 

 Communicated by the Astronomer Royal, F.R.S. 161 



VII. A Thermomagnetic Study of the Eutectoid Transition Point of Carbon Steels. 



By S. W. J. SMITH, M.A., D.Sc., F.R.S., Assistant Professor of Physics, and 

 J. GUILD, A.R.C.S., D.I.C., Assistant Demonstrator of Physics, Imperial 



College, South Kensington 177 



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