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actinium action active deposit allowed already amount appear atomic weight become bismuth bodies carried charge chemical conductivity connected considerable considered consist constant contained crystals Curie curves decay definite deflected density detected difficulty direct discovery earth Edition effect electricity electrometer elements emitted energy evidence existence experiments exposed fact fall field formed further gases give given greater half heat hydrogen Illustrations important increased ionization ions known less light lines magnetic material matter means measured metals method minerals nature necessary negative observed obtained ordinary original particle passing phenomena Phil plate polonium positive possible potential present pressure produced properties quantity question radiation radio radioactive radioactive bodies radium emanation rays removed rise Rutherford salt seen separated shown similar solution studied substance sufficient temperature theory thorium tion transformed tube uranium velocity vessel
Página 305 - XVIII. The Nature of Light. With a General Account of Physical Optics.
Página 304 - XI. Animal Mechanism : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations. Second Edition. Crown 8vo, $s. XII. The Doctrine of Descent and Darwinism. By Professor Oscar Schmidt. With 26 Illustrations. Fifth Edition. Crown 8vo, 5*.
Página 304 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Página 305 - XXIII. Studies in Spectrum Analysis. By J. Norman Lockyer, FRS With six photographic Illustrations of Spectra, and numerous engravings on Wood.
Página 305 - Third Edition. With 130 original Illustrations. XXVIII. The CRAYFISH : an Introduction to the Study of Zoology. By TH HUXLEY, FRS, Sixth Edition.
Página 307 - LL.D. With 13 Plates Illustrating all the Genera. LXX. SOCIALISM: NEW and OLD. By WILLIAM GRAHAM, MA, Professor of Political Economy and Jurisprudence, Queen's College, Belfast Second Edition.
Página 304 - MD Fifth Edition. IX. The NEW CHEMISTRY. By Professor JP COOKE, of the Harvard University. With 31 Illustrations.
Página 306 - WASPS. A Record of Observations on the Habits of the Social Hymenoptera. By Sir JOHN LUBBOCK, Bart., MP Tenth Edition. With 5 Chromo-lithographic Plates. XLI. ANIMAL INTELLIGENCE. By GEORGE J. ROMANES, LL.D., ERS Fifth Edition. XLII. The CONCEPTS and THEORIES of MODERN PHYSICS.