AMERICAN CHEMICAL JOURNAL.
Volume XII, No. 4, April, 1890. W. M. Burton and L. D. Vorce have determined the atomic weight of magnesium, finding the number 24.287 (O = 16). H. W. Hillyer describes a convenient form of gas generator for laboratory purposes. Reviews and Reports: Recent progress in industrial chemistry. Notes: Chemical examination of baking powders. Density, color, and spectrum of fluorine.
Volume XII, No. 6, June. Gibbs and Hare continue the study of the action of definitely related compounds on animals.
Volume XII, No. 7, July. W. A. Noyes concludes his determination of the atomic weight of oxygen, finding the number 15.896. Reviews and Reports: Electrolytic dissociation. C. R. S.
JOURNAL OF THE AMERICAN SOCIETY OF NAVAL ENGINEERS.
May, 1890. Notes on modern boiler-shop practice. Notes on the effect of temperature on certain properties of various metals and alloys. Tubulous boilers.