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Contents.—Chemistry and the Atomic Theory. Molecular Agitation. The Brownian Movement—Emulsions. The Laws of the Brownian Movement. Fluctuations. Light and Quanta. The Atom of Electricity. The Genesis and Destruction of Atoms. Index.

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Contents.—Part I., First Principles. Part II., The Pan Cycle Hypothesis: Invisible Composition Light Waves, the Warp and Woof of the Ether Structure and of All Things Material.

The Profession of Chemistry. Richard B. Pilcher, Registrar and Secretary of the Institute of Chemistry of Great Britain and Ireland. Crown 8vo. 6/6 net.

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The authors show how science has advanced the methods and processes of production and laid the foundation for the establishment of new manufactures. Many important industries are surveyed with the particular object of informing students of chemistry and engineering of the vast field open to them in their professional careers.