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A 565. On Osmotic Pressures Derived from Vapour-pressure Measurements : Aqueous Solutions of Cane 
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A 566. The Ultra-Violet Band of Ammonia, and its Occurrence in the Solar Spectrum. By A Fowler, 
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A 567. Surface Reflexion of Earthquake Waves. By George W. Walker, A.R.C.Sc., M.A, F.R.S., 
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A 568. Monoclinic Double Selenates of the Iron Group. By A. E. H. Tutton, D.Sc., M.A., F.R.S. 
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A 669. Title, Contents, Index, &c., VoL 218. Pp. 10. Price 6d. 
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A 570. The Magnetic Re-Survey of the British Isles for the Epoch January 1, 1915. By George W. 
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B 360. The Structure, Evolution and Origin of the Amphibia.—The “ Orders ” Rachitomi and 
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B 361. On the Structure and Biology of Arehotermopsis, together with Descriptions of New Species of 
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B 362. An Investigation into the Periodicity of Measles Epidemics in the Different Districts of London 
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B 363. The Pelmatoporinae, an Essay on the Evolution of a Group of Cretaceous Polyzoa. By 
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B 364. Recherches Anatomo-Cbniques sur les Nevromes d’Amputations Douloureux. Nouvelles 
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B 365. The Epithelial Sheath of Hertwig in the Teeth of Man, with Notes on the Follicle and 
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