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The original translation has been revised and brought up to date by the translators. Colloid chemistry as a separate field of investigation is a relatively recent offspring of physical chemistry. Not many books are in existence which attempt to treat the subject comprehensively. The "practical introduction" gives an elementary general and special colloid analysis, that is, the elementary means of recognizing matter in colloidal state from matter not in colloidal state, and the manner of differentiating between various colloidal systems. Part I treats of general colloid chemistry. Paragraph 17 is captioned "The Concept of Colloid-Chemistry," and defines its field thus: "Colloid-Chemistry deals with the relations of the surface energies to other kinds of energy as shown in an especially characteristic way in dispersed heterogeneous systems." Part II treats of the mechanical properties of colloid systems. The book is apparently not intended as an easy introduction for the beginner in colloidal
A Handbook of Colloid-Chemistry: The Recognition of Colloids, the Theory of Colloids, and their General Physico-Chemical Properties.. JAMA. 1919;72(15):1100. doi:10.1001/jama.1919.02610150058035
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