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A 578. The Influence of Molecular Constitution and Temperature on Magnetic Susceptibility. 
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A 579. A Determination of the Deflection of Light by the Sun’s Gravitational Field, from Observations 
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A 580. A Critical Study of Spectral Series. Part V.—The Spectra of the Monatomic Gases. By 
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A 581. Title, Contents, Index, &c., Vol. 220. Pp. 10. Price 6 d. 
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A 582. Some Measurements of Atmospheric Turbulence. By Lewis F. Richardson. Pp 28; 1 Plate. 
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A 583. On a Theory of the Second Order Longitudinal Spherical Aberration for a Symmetrical Optical 
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A 584. Investigations on Lightning Discharges and on the Electric Field of Thunderstorms. By 
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B 367. The Transition from Rostro-Carinate Flint Implements to the Tongue-Shaped Implements of 
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B 368. The Development of the Sea-Anemones Metridnm Dianthus (Ellis) and Adamasi Palliata 
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B 369. The Morphology and Evolution of the Ambulacrum in the Eehinoidea Holectypoida. By 
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B 370. On the Structure of Lysorophus, as Exposed by Serial Sections. By W. J. Sollas, Sc.D., 
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B 371. Title, Contents, Index, &c., Vol. 209. Pp. 10. Price 6 d. 
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B 372. The Respiratory Exchange of Man During and After Muscular Exercise. By J. M. H. Campbell, 
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B 373. The Microscopical Features of Mechanical Strains in Timber and the Bearing of these on the 
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