Elementary principles in physical chemistry, with special reference to the state of equilibrium in a chemical reaction and to the rate of attainment of the state of equilibrium: by T. J. Webb. 344 pages, tables, 15.5 × 23 cms. New York and London, D. Appleton-Century Company, Inc., 1936. Price $4.00

Qualitative chemical analysis, certain p

Qualitative chemical analysis, certain principles and methods used in identifying inorganic substances together with a systematic survey of the chemistry of these materials: by Roy K. McAlpine, Ph.D. and Byron A. Soule, Sc.D., University of Michigan. Based upon the text by A. B. Prescott and O. C. Johnson, 696 pages, tables, 15.5 × 23.5 cms. New York, D. Van Nostrand Company, Inc., 1933. Price $4.50

✍ J.S. Hepburn 📂 Article 📅 1933 🏛 Elsevier Science 🌐 English ⚖ 65 KB

Marius used a telescope and did observe the inner satellites of Jupiter, though apparently he did not realize their true nature, for which discovery the Italian must be credited. It is hardly true, as we read on page 128, that the rings of Saturn can ever be seen "with prism binoculars," unless they