Abstract
THIS book will be hailed both by the ordinary chemist, and also by the geologist, and also by the pharmacist, as a most valuable addition to our already very numerous books on chemical reactions or analysis. The object of the author has been to arrange in such a form as can be used in the laboratory, tests and reactions of a great number of substances which may be performed on very minute quantities, and the resulting bodies recognised by their characteristic forms under the microscope. As the author says, some substances are so easily recognised in minute quantities even in the ordinary way, like iron, iodine, or by spectroscopic means, as thallium or lithium, that recourse to the microscope is seldom necessary. But in the majority of cases, where small quantities have to be looked for, the style and general habitus of crystal produced either in precipitates or by evaporation from solutions, and especially their behaviour towards polarised light, gives most valuable indications of the presence of any metal, and where, as in most cases can easily be done, several salts are in this way compared, the results are quite as conclusive as with large quantities. The substances treated of are metals, non-metals, and acids, which are arranged for greater convenience of reference in working, in alphabetical order. The principal and most general forms of crystals are illustrated by 137 well-executed woodcuts.
Microskopische Reactionen.
By Dr. H. Haushofer, Professor am Technischen Hochschule, Munchen. (Braunsweig: Vieweg und Sohn, 1885.)
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[Book Reviews]. Nature 33, 174 (1885). https://doi.org/10.1038/033174b0
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DOI: https://doi.org/10.1038/033174b0