The Quantitative Study of Organic Reactions.

CONTENTS The Quantitative Study of Organic Reactions: PROFESSOR S. F. ACREE ................. 617 Bacteriology as a Non-technical Course for Public Schools: DR. H. W. HILL ......... 625 Teaching by the Lecture System: DR. NORMAN A. DUBOIS ........................ 628 Kakichi Mitsukuri: PRESIDENT DAVID STARR JORDAN ............................... 630 The Western Eloxcursion follawing the Winnipeg Meeting of the British Association: DR. F. P. GULLIVER ..................... 632 Forest Products Investigation ............. 633 The American Association of Economic Entomologists .............................. 635 The Rockefeller Commission for the Eradication of the Hookworm Disease ........... 635 Scientific Notes and News ................. 636 University and Educational News.... ..... 638 Discussion and Correspondence:A Reply to Mr. Percival Lowell: PROFESSOR F. R. MOULTON. The Development of the Planetesimal Hypothesis: PROFESSORS T. C. CIHAMBERLIN and F. R. MOULTON. An Association of American Chemical Research Laboratories: PROFESSOR M. A. ROSANOFF. Family Records: DR. C. B. DAVENPORT ... 639 Scientific Books:Kofoid on the Plankton of the Illinois River: C. JUDAY. Friend on the Theory of Valency: PROFESSOR Louis KAHLENBERG .. 646 The Mechanics of Biology: PROFESSOR VERNON L. KELLOGG ............................ 649 Notes on Entomology: DR. NATHAN BANKS . 650 Special Articles:The Possible Effects of Cement Dust on Plants: PROFESSOR GEORGE J. PEIRCE. The Algae of the Ithaca Marshes: H. A. ANDERSON. The Molecular Constitution of Solids: J. E. SIEBEL ............................... 652 Societies and Academies:The Anthropological Society of Washington: JOHNr R. SWANTON. The New York Section of the American Chemical Society: DR. C. M. JOYCE ....................... 656