Origin and character of schizogenous resin cavities in avocado fruits and leaves: SWARNA KUMER MITRA. Origin and character of adventitious roots in Cornus pubescence: SWARNA KUMER MITRA. Story of citrus fruits of Pinellas County, Florida: KATHARINE DOORIS SHARP. Factors controlling transpiration: JASPER D. SAYRE. Certain conditions that hinder the study of botany in high schools: MAXIMILIAN BRAAM. Progress in plant microchemistry: H. C. SAMPSON. Sugar syrup from home grown sugar beets: JAMES R. WITHROW. Some farm experiments in the making of syrup from sugar beets: F. C. VILBRANDT. Some pertinent questions for Ohio scientists: (a) Sulphuric acid and kiln plants and their fumes; (b) The errors of Ohio's legal kerosene flash point apparatus-the Foster cup; (c) The unnecessary use of potassium salts; (d) The damage to science and industry by the wastage of platinum: JAMES R. WITHROW. Partial solution of certain applied chemical problems: (a) Saving of platinum by the use of platinum crucibles in electroanalysis; (b) By a modified mercury cathode cell; (c) The determination of water in substances easily decomposable thermally: JAMES R. WITHROW. Gas combustion investigations: (a) Quartz-apparatus; (b) Central burner type; (c) Devitrification of quartz in capillaries: F. C. VILBRANDT. The thermionic tube as a useful amplifying tool of the scientist: A. D. COLE. A seasonal breakage of watch springs and its cause: SAMUEL R. WILLIAMS. Springs of minimum weight: H. C. LORD. Relations between atomic numbers and the wave lengths of X-rays: S. J. M. ALLEN. Relations between absorption coefficients and wave lengths of X-rays: S. J. M. ALLEN. Characteristic curves of different types of thermionic tubes: A. D. COLE. Thermodynamics: Louis T. MORE. Electrification by impact: HAROLD RICHARDS. On self and mutual elastance and capacitance: F. C. BLAKE. Note on a double solenoid for the production of uniform magnetic fields: S. J. BARNETT. Observations on eruptive phenomena in the Valley of Ten Thousand Smokes: ROBERT F. Griggs. Diastrophism still continuing in the Great Lakes region: E. L. MOSELEY. Clarion and Vanport members in Ohio: WILBER STOUT. A pre-somite human embryo: C. L. TURNER. Relation of catalase to activity: R. J. SEYMOUR. Some features of industrial fatigue: E. R. HAY HURST. Epidemic encephalitis: ERNEST SCOTT. Measurement of blood pressure by resistance of carbon discs: E. P. DURRANT. Educative characteristics of first grade children: MARY E. MILLER. A study of the lowest five per cent. of college students as determined by the army alpha examination: HELEN MARSHALL. A study of the highest five per cent. of college students as determined by the army alpha examinations: EARL R. GABLER. Experimentation in the psychology of music: ESTHER L. GATEWOOD. Mental and educational tests of the deaf: JEANNETTE REAMER. Syphilis and delinquency: FLORENCE MATEER. SCIENCE VOL. LII, No. 1337 FRIDAY, AUGUST 13, 1920 NEW SERIES COPIES, 15 CTS. SUBSCRIPTION, 86.00 eneral Library 3Jm21 University of Michigan Ann Arbor Mich Blakisto Heredity And Evolution In By C. STUART GAGER Director Brooklyn Botanic Garden, Brooklyn, N. Y., Author of 113 Illustrations. 12mo, xv+265 Pages. Cloth, $1.25 Postpaid A CONCISE treatment suited to beginning students Contents in Brief: Life History of a Fern; Funda- P. BLAKISTON'S SON & CO., Publishers, PHILADELPHIA Origin and character of schizogenous resin cavities in avocado fruits and leaves: SWARNA KUMER MITRA. Origin and character of adventitious roots in Cornus pubescence: SWARNA KUMER MITRA. Story of citrus fruits of Pinellas County, Florida: KATHARINE DOORIS SHARP. Factors controlling transpiration: JASPER D. SAYRE. Certain conditions that hinder the study of botany in high schools: MAXIMILIAN BRAAM, Progress in plant microchemistry: H. C. SAMPSON. Sugar syrup from home grown sugar beets: JAMES R. WITHROW. Some farm experiments in the making of syrup from sugar beets: F. C. VILBRANDT. Some pertinent questions for Ohio scientists: (a) Sulphuric acid and kiln plants and their fumes; (b) The errors of Ohio's legal kerosene flash point apparatus-the Foster cup; (c) The unnecessary use of potassium salts; (d) The damage to science and industry by the wastage of platinum: JAMES R. WITHROW. Partial solution of certain applied chemical problems: (a) Saving of platinum by the use of platinum crucibles in electroanalysis; (b) By a modified mercury cathode cell; (c) The determination of water in substances easily decomposable thermally: JAMES R. WITHROW. Gas combustion investigations: (a) Quartz-apparatus; (b) Central burner type; (c) Devitrification of quartz in capillaries: F. C. VILBRANDT. The thermionic tube as a useful amplifying tool of the scientist: A. D. COLE. A seasonal breakage of watch springs and its cause: SAMUEL R. WILLIAMS. Springs of minimum weight: H. C. LORD. Relations between atomic numbers and the wave lengths of X-rays: S. J. M. ALLEN. Relations between absorption coefficients and wave lengths of X-rays: S. J. M. ALLEN. Characteristic curves of different types of thermionic tubes: A. D. COLE. Thermodynamics: Louis T. MORE. Electrification by impact: HAROLD RICHARDS. On self and mutual elastance and capacitance: F. C. BLAKE. Note on a double solenoid for the production of uniform magnetic fields: S. J. BARNETT. Observations on eruptive phenomena in the Valley of Ten Thousand Smokes: ROBERT F. GRIGGS. Diastrophism still continuing in the Great Lakes region: E. L. MOSELEY. Clarion and Vanport members in Ohio: WILBER STOUT. A pre-somite human embryo: C. L. TURNER. Relation of catalase to activity: R. J. SEYMOUR. Some features of industrial fatigue: E. R. HAY HURST. Epidemic encephalitis: ERNEST SCOTT. Measurement of blood pressure by resistance of carbon discs: E. P. DURRANT. Educative characteristics of first grade children: MARY E. MILLER. A study of the lowest five per cent. of college students as determined by the army alpha examination: HELEN MARSHALL. A study of the highest five per cent. of college students as determined by the army alpha examinations: EARL R. GABLER. Experimentation in the psychology of music: ESTHER L. GATEWOOD. Mental and educational tests of the deaf: JEANNETTE REAMER. Syphilis and delinquency: FLORENCE MATEER. NEW SERIES SCIENCE VOL. LII, No. 1337 University of Michigan Ann Arbor Mich Blakisto Heredity And Evolution In By C. STUART GAGER Director Brooklyn Botanic Garden, Brooklyn, N. Y., Author of for General Botany," etc. 113 Illustrations. 12mo, xv+265 Pages. Cloth, $1.25 Postpaid A CONCISE treatment suited to beginning students Contents in Brief: Life History of a Fern; Funda- P. BLAKISTON'S SON & CO., Publishers, PHILADELPHIA "The Science of Every Day" -The modern idea of physics Millikan and Gale's fits this definition admirably. GINN AND COMPANY |