APK 1 Vol. XXI. No. 1 APR 1 5 1924 JANUARY, 1921 Whole No. 174 SCHOOL SCIENCE AND ATHEMATICS A Journal for All Science and Mathematics Teachers Founded by C. E. Linebarger SMITH & TURTON, Publishers Publication Office, Mount Morris, Illinois Published Monthly October to June, Inclusive, at Mount Morris, Illinois Entered as second-class matter March 1, 1913, at the Post Office at Mount Morris, Illinois, under the Act Lantern Slides of Science A copy of our Catalogs of science slides was mailed when published to every member of the Central Association. Are you a member? Did you get your copy? Did you keep it? If not, there is another copy for you if you are interested. Just write us a card and ask for it. No obligation. You'll need it in placing your orders for science slides. "The Chemistry of Life-Not of Books" Please mention School Science and Mathematics when answering Advertisements. A Achievement of High School and Freshman College Students in Chemistry, The. Addenda Wanted.. S. R. POWERS.... Af hanistan. NATIONAL GEOGRAPHIC SOCIETY.. Agricultural Club Efficiency, Standards for Judging. W.W. CHARTERS and JAMES H. GREENE. Alaskan Surveys in Arrears? U. S. GEOL. SURVEY. Algebra Failures, Worth-while Work With. HELEN I. WESTLEY. 366 194 782 116 149 822 36 Aluminum, Automobiles and Arkansas. U. S. GEOL. SURVEY. 250 Aluminum Production. U. S. GEOL. SURVEY... 443 Altitude of Penn. is 1100 Feet, Average. U.S. GEOL. SURVEY. 764 Amendment to the Centrals' Constitutions... 692 "American" in Teaching Chemistry. HARRISON HALL. 859 60 Articles in Current Periodicals.......92, 186, 298, 404, 592, 700, 802 910 774 736 Asphalt Increases, Production of. U. S. GEOL. SURVEY. 771 Automobile, An Experiment to Determine the Driving Torque of an. Bacteriology in a Biology Course, A Method of Teaching. HELEN Biological Sciences to Universal Secondary Education, Contribution 103 Biology and Related Sciences in City High Schools, Organization of. 463 Biology by a High School Pupil of Columbus, Ohio, An Experiment in. 558 Biology in General Science and the Aims to be Attained, Aspects of. 307 Biology Section, Minutes of the. ELSA K. HARJES. 259 Biology, Some Aspects and Problems of High School. N. M. GRIER 444 Book Reviews... ..96, 194, 296, 402, 508, 600, 706, 804, 912 American Chemistry. HERBERT E. COBB. Analytic Geometry. Animal Husbandry. CHARLES H. SMITH. 710 Elementary Applied Mathematics. HERBERT E. COBB.. Elementary Calculus. HERBERT E. Совв.. Elementary Electrical Engineering. CHARLES H. SMITH..... Elementary Functions and Applications. HERBERT E. COBB. Hygiene and Health. WORROLLO WHITNEY. Illinois Arbor and Bird Days. CHARLES H. SMITH. Introduction to General Chemistry. FRANK B. WADE. Junior High School Mathematics. HERBERT E. COBB. Laboratory Experiments in Organic Chemistry. Lessons in Heat. CHARLES H. SMITH... The American Red Cross in the Great War. CHARLES H. SMITH. 508 The Constitution of the United States of America. CHARLES H. The Derivation and Standardization of a Series of Diagnostic Tests The Elements of High School Mathematics. HERBERT E. COBB.. 808 iv The Quaternary Geology of the New Haven Region. CHARLES H. 710 Burma: Land of Pagodas. NATIONAL GEOGRAPHIC SOCIETY Central Association. WALTER W. HART. Central Association of Science and Mathematics Teachers, The. W. Central Association of Science and Mathematics Teachers: Secre- Chemical Education, Application of Educational Psychology to. 862 Chemistry be Increased, How May Local Interest in. C. E. OSBORNE 128 262 HERBERT R. SMITH... Chemistry References for Students and Teachers. EARL R. GLENN..- 477 Children's Interest in Science Materials, Some Studies of. CHARLES Classroom Sayings. College Education Pays. Jos. L. WRIGHT. 180, 400, 476, 637 242 College Graduates in Chemistry Fitted to Take up Research Pro- 800 College Mathematics, High School and. THOS. E. MASON. 37 Committee of Mathematical Requirements, The National. 798 343 Content of High School Physics, Report of the Committee on the. Continuation Schools: Should the Teaching be Considered of Ele- Conventional Examination in Chemistry and Physics, Versus the Diffraction Method for Measurement of Wave Length, An Elemen- Diophantine Analysis Applied to the Constructibility of Regular |