PROCEEDINGS OF THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE, TWENTY-NINTH MEETING, HELD AT Boston, Mass., AUGUST, 1880. SALEM: PUBLISHED BY THE PERMANENT SECRETARY. 1881. LIBRARY UNIVERSITY OF CALIFORNIA DAVIS SECTION A. MATHEMATICS, PHYSICS AND CHEMISTRY. Address of ASAPH HALL, Vice President COMMUNICATIONS. On some of the consequences of the hypothesis, recently proposed, that the intrinsic brilliancy of the Fixed Stars is the same for each star. By Problems in Watson's Co-ordinates. Abstract. By THOMAS HILL On two New Instruments for the Determination of Time and Latitude. By Friction of Lubricating Oils. By C. J. H. WOODBURY. Illustrated Determination of the Comparative Dimensions of Ultimate Molecules; and Deduction of the Specific Properties of Substances. By WILLIAM A. NORTON. Illustrated On the Force of Effective Molecular Action; and the Mechanical Properties and Laws dependent on it. Abstract. By WILLIAM A. NORTON On a Simple Device for Projecting Vibrations of a Liquid Film without a Lens. Note on the Zodiacal Light. Abstract. By HENRY CARVILL LEWIS The Aurora and Zodiacal light of May 2, 1877. By HENRY CARVILL LEWIS Experiments on the Strength of Yellow Pine. Abstract. By R. H. THURSTON A New Method of obtaining a Permanent Trace of the Plane of Oscillation of a Foucault-pendulum. Abstract. By ALFRED M. MAYER On a simple means of measuring the Angle of Inclination of the mirrors used in Fresnel's experiment on the Interference of Light. Abstract. New Planetary Nebulæ. Abstract. By EDWARD C. PICKERING New Method for Finding the Numerical Roots of Equations below the Fourth Address of JOHN M. ORDWAY, Chairman Laws governing the Decomposition of Equivalent Solutions of Iodides under the influence of Actinism. By ALBERT R. LEEDS. Illustrated The Rotatory Power of Commercial Glucose and Grape Sugar. A Method of Determining the Amount of Reducing Substances present by the Polari- The Effect of Heating with Dilute Acids, and Treating with Animal Charcoal on the Rotatory Power of Glucose; with Notes on the Estimation of Cane Some points in the construction of an apparatus for the accurate analysis of Numerical results for the mean ratio of oxygen to the sum of oxygen and nitrogen in atmospheric air. Abstract. By EDWARD W. MORLEY Some conclusions as to the cause of the frequent fluctuations in the ratio of oxygen to nitrogen in the air at different times. Abstract. By EDWARD The soil supply of nitrogen for plants. Abstract. By W. O. ATWATER The determination of phosphoric acid by the molybdic method. Abstract. The determination of sulphuric acid. Abstract. By W. O. ATWATER . The quantitative determination of fats. Abstract. By W. O. ATWATER PERMANENT SUBSECTION OF MICROSCOPY. PAGE 356 356 357 357 Microscopical Collections in Florida. By C. C. MERRIMAN Permanent Microscopic Preparations of Plasmodium. By SIMON H. GAGE 377 378 Method of Preparing and Mounting Wings of Microlepidoptera. By C. H. The Microscopical Investigations of the Havana Yellow Fever Commission. On the Progress of Geological Investigation in New Brunswick, 1870-1880. The Cupriferous Series in Minnesota. By N. H. WINCHELL 415 422 An attempt to estimate approximately the Date of the close of the Glacial 426 The Iron Ores of the Brandon Period. Abstract. By HENRY CARVILL 427 On the age of the Copper-bearing Rocks of Lake Superior. Abstract. By M. 429 Turquoise of New Mexico. By B. SILLIMAN. Illustrated The Island of Montreal an Island, not in the St. Lawrence, but in the Ottawa. 435 The Law of Land-forming on our Globe. By RICHARD OWEN 437 On Maximum Synchronous Glaciation. By W. J. MCGEE. Illustrated Plan of the Cerebro-spinal Nervous System. Abstract. By S. V. CLEVENGER. On Color-blindness. Abstract. By B. JOY JEFFRIES The First Decade of the United States Fish Commission: its plan of work The Spanish Mackerel, and its Artificial Propagation. By CHARLES W. 575 |