A Short History of Astronomy, New York, 1899. Bertrand, J. L. F. Les fondateurs de Vastronomie modern: Copernic, Tycho Brake, Kepler, Galileo, et Newton, Paris, 1865. This gives an interesting account of the lives and works of these philosophers. Flammarion, C. Vie de Copernic, et histoire de la découverte du système du monde, Paris, 1872. Forster, W. Johann Kepler und die Harmonie der Sphcren, Berlin, 1862. Jensen, P. Die Kosmologie der Babylonier, Strasburg, 1890. 261 Lockyer, Joseph Norman. The Dawn of Astronomy; a Study of the Temple Worship and Mythology of the Ancient Egyptians, London, 1894. Loom is. History of Astronomy, New York, 1855. Rothmann. History of Astronomy (in the Library of Useful Knowledge), London, 1834. Société Astronomique de France. Monthly bulletin, Paris. Thompson, R. Campbell. Reports of the Magicians and Astrologers of Nineveh and Babylon, p. 19, London, 1900. Wolf, R. Geschichte der Astronomie, Munich, 1877. VI.--PHYSICS (ELECTRICITY) Annalen der Physik, Leipzig. Edited by Dr. Paul Drude. (Note--Heavy, scientific, up-to-date. Is apparently under the patronage of all the big physicists, such as Roentgen, etc.) A tit della Associazione Elethotecnica Italiana (at Rome). A large bi-monthly magazine, strictly technical, devoted largely to theoretical problems of electricity and allied subjects. Bulletin International de VElectricitê et Journal de VElectricitê {réunis). A semi-monthly four-page paper dealing with the technical application of electricity in its various fields. Die Dissozuerung und Umwandlung chemischer Atome, by Dr. Johannes Stark, 1903. Price 150 m. "A comprehensive view of the application of the electron theory to certain phenomena."--Nature, May, 1904. Die Kathodenstrahlen, by G. C. Schmidt, Brunswick, 1904. "A concise and complete account of the properties of the cathode rays."--Nature, June, 1904. Electrical Engineer. Electrical Magazine. Electricity. A weekly journal, published by the Electricity Newspaper Co., New York. Devoted largely to questions of the practical application of electricity, but dealing also with the theoretical side. Elements of Electro-magnetic Theory, by S. J. Barnett, Le-land Stanford, Junior, University. Macmillan & Co., 1904. ($3.) Handbuch der Physik, by Dr. A. Winkelmann, Leipzig, 1904. "An indispensable storehouse of expert knowledge."--Nature, July, 1904. Hardin. Rise and Development of the Liquefaction of Gases, New York, 1899. La théorie de Maxwell et les oscillations hertziennes, la Télégraphie sans flt by H. Poincaré, Paris, 1904 (price 2 fr.). Interesting studies of light, etc. An interesting brochure.--Revue Scientifique, July, 1904. Le radium et la radioactivité, by Paul Besson, Paris, 1904 (price 2 fr. 75). A good exposition of the known properties of radium, marred, however, by an attempt to put in accord science and religion--à propos du radium! --Revue Scientifique, July, 1904.