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A 550. On Periodic Disturbance of Level Arising from the Load of Neighbouring Oceanic Tides. By 
K. Terazawa, Ri-Gakushi of the Imperial University of Tokyo. Pp. 16. Price Is. 
A 551. The Genesis of Pleochroic Haloes. By J. Joly, Sc.D., F.R.S., Professor of Geology and 
Mineralogy in the University of Dublin. Pp. 29 ; 1 Plate. Price 2s. 
A 552. Seventh Memoir on the Partition of Numbers. A Detailed Study of the Enumeration of the 
Partitions of Multipartite Numbers. By Major P. A. MacMahon, R.A., D.Sc., Sc.D., F.R.S. 
Pp. 33. Price 2s. 
A 553. On the Kinetic Theory of a Gas. Part II.—A'Composite Monatomic Gas : Diffusion, Viscosity, 
and Thermal Conduction. By S. Chapman, M.A., D.Sc., Fellow and Lecturer of Trinity 
College, Cambridge. Pp. 83. Price 4s. 
A 554. Monoclinic Double Selenates of the Nickel Group. By A. E. H. Tutton, D.Sc., M.A., F.R.S. 
Pp. 37. Price 2s. 
A 555. On Phenomena Relating to the Spectra of Hydrogen and Helium. By T. R. Merton, D.Sc. 
(Oxon), Lecturer in Spectroscopy, University of London, King’s College, and J. W. Nicholson, 
M.A., D.Sc., Professor of Mathematics in the University of London. Pp. 42; 2 Plates. 
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A 556. Numerical Results of the Theory of the Diffraction of a Plane Electromagnetic Wave by a 
Perfectly Conducting Sphere. By J. Proudman, A. T. Doodson, and G. Kennedy. Pp. 36. 
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Series B. — Biological. 
B 346. On the Structure of the Dicynodont Skull. By Igerna B. J. Sollas and W. J. Sollas, F.R.S. 
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B 347. Title, Contents, Index, &c., Vol. 207. Pp. 10. Price 6d. 
B 348. On the Action of Cobra Venom. Parts I and II. By Arthur R. Cushny, F.R.S., and S. Yagi. 
Pp. 36. Price 2s. 
B 349. The Convolutional Pattern of the Brains of Identical Twins: A Study on Hereditary 
Resemblance in the Furrows of the Cerebral Hemispheres. By F. Sano, M.D. (Brussels), 
Physician in Chief to the Asylum for Acute Mental Cases at Antwerp (Belgium). Pp. 25. 
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B 350. The Skull of Ichthyosaurus, Studied in Serial Sections. By W. J. Sollas, F.R.S., Professor of 
Geology in the University of Oxford. Pp. 64; 1 Plate. Price 4s. 
B 351. On the Fossil Floras of the Coal Measures of South Staffordshire. By E. A. Newell Arber, 
M.A., Sc.D., F.G.S., Trinity College, Cambridge, University Demonstrator in Palse obotany. 
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B 352. Analyses of Agricultural Yield. Part III.—The Influence of Natural Environmental Factors 
upon the Yield of Egyptian Cotton. By W. Lawrence Balls, Sc.D., late Fellow of 
St. John’s College, Cambridge. Pp. 67. Price 5s. 
B 353. An Investigation into the Periodicity of Measles Epidemics in London from 1703 to the Present 
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