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Tidal Friction in the Irish Sea. By G. I. Taylor, M.A. Pp. 33. Price 3s. 6d. 
Electromagnetic Integrals. By Sir G. Greenhill, F.R.S. Pp. 31. Price 3s. 
Bakerian Lecture, 1918.—Experiments on the Artificial Production of Diamond. By 
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The Pressure upon the Poles of the Electric Arc. By W. G. Duefield, D.Sc., Professor of 
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On Intensity Relations in the Spectrum of Helium. By T. R. Merton, D.Sc., Lecturer in 
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The Scattering of Plane Electric Waves by Spheres. By T. J. I’A. Bromwich, Sc.D., F.R.S. 
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On the Fundamental Formulations of Electrodynamics. By G. H. Livens, University of 
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The Influence of Molecular Constitution and Temperature on Magnetic Susceptibility, 
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A Determination of the Deflection of Light by the Sun’s Gravitational Field, from Observations 
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Series B. — Biological. 
The Epithelial Sheath of Hertwig in the Teeth of Man, with Notes on the Follicle and 
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On Nerve-End Cells in the Dental Pulp. By J. Howard Mummery, D.Sc. (Hon.), Penn., M.R.C.S. 
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The Transition from Rostro-Carinate Flint Instruments to the Tongue-Shaped Implements of 
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The Development of the Sea-Anemones Metridium Dianthus (Ellis) and Adamda Palliaia 
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The Morphology and Evolution of the Ambulacrum in the Echinoidea Holedypoida. By 
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On the Structure of Lysorophus, as Exposed by Serial Sections. By W. J. SOLl^AS, Sc.D., 
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Title, Contents, Index, &c., Vol. 209. Pp. 10. Price 6d. 
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The Respiratory Exchange of Man During and After Muscular Exercise. By J. M. H. Campbell, 
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