138 



SCIENCE 



[N. S. Vol. LII. No. 1336 



Origin and character of schizogenous resin cavities 

 in avocado fruits and leaves: Swabna Kumbb 



MiTRA. 



Origin and dharaater of adventitious roots in Cornus 

 pubescence : Swakna Kumer Mitka. 



Story of citrus fruits of Pinellas County, Florida: 

 Katharine Dooris Sharp. 



Factors controlling transpiration: Jasper D. 

 Sayre. 



Certain conditions that hinder the study of iotany 

 in high schools: Maximilian Beaam. 



Progress in plant microchemistry : H. C. Sampson. 



Sugar syrup from home grown sugar beets: 

 James R. Withkow. 



Some farm experiments in the making of syrup 

 from sugar beets: F. C. Vilbrandt. 



Some pertinent questions for Ohio scientists: (a) 

 Sulphuric acid and Tciln plants and their fum.es; 

 (6) The errors of Ohio's legal kerosene flash 

 point apparatus — the Foster cup; (c) The un- 

 necessary use of potassium salts; (d) The dam- 

 age to science and industry by the wastage of 

 platinum : James E. Withrow. 



Partial solution of certain applied chemical prob- 

 lem's: (a) Saving of platinum by the use of 

 platinum crumbles in electroanalysis ; (6) By a 

 modified mercury cathode cell; (c) The determi- 

 nation of water in substances easily decomposable 

 thermally: James E. Withrow. 



Gas combustion investigations: (a) Quartz-appa- 

 ratus; (6) Central burner type; (c) Devitrifica- 

 tion 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 E. Williams. 



Springs of minimum weight: H. C. Lord. 



delations between atomic numbers and tlw wave 

 lengths of X-rays : S. J. M. Allen. 



Belations between absorption coefficients and wave 

 lengths of X-rays : S. J. M. Allen. 



Characteristic curves of different types of thermi- 

 onic tubes: A. D. Cole. 



Thermodynamics: Louis T. More. 



Electrification by impact: Harold Eichards. 



On self and mutual elastance and capacitance: F. 

 C. Blake. 



Note on a double solenoid for the production of uni- 

 form 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: Wilder 



Stout. 

 A pre-somite human embryo: 0. L. Turner. 

 Selation of catalase to activity: E. J. Seymour. 

 Some features of industrial fatigue: E. E. Hay- 



HUEST. 



Epidemic encephalitis: Ernest Scott. 



Measurement of blood pressure by resistance of 

 carbon discs: E. P. Duerant. 



Educative characteristics of first grade children: 

 Mary E. Miller. 



A study of the lowest five per cent, of college stu- 

 dents as determined by the army alpha examina- 

 tion: Helen Marshall. 



A sturdy of the highest five per cent, of college stu- 

 dents as determined by tlie army alpha examina- 

 tions: Earl E. Gablee. 



Experimentation in the psychology of music: 

 Esther L. Gatewood. 



Mental and educational tests of the deaf: 

 Jeannette Eeamek. 



Syphilis and delinquency: Florence Mateer. 



demonstrations 

 Black tumor of the catfish: E. C. Osburn. 

 Some interesting tropical Hemiptera: Herbert Os- 



born. 

 Caddis cases covered with sponges: F. H. Krecker. 

 Wax models of 8 mm. and 12 mm. chondrocrania of 



Syngnathus: J. B. Kindred. 

 Models of pre-somite (Mateer) human embryo: C. 



L. Turner. 

 Specimens from the Valley of Ten Thousand 



Smokes: Eobert F. Griggs. 

 Wireless telephone: E. A. Brown. 



Edward L. Eice, 



Secretary 



Delaware, Ohio 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the official notices and pro- 

 ceedings of the American AssociatioQ for 

 the Advancement of Science 



Published every Friday by 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YORK, N. Y. 



Entered in the post-office at LancMtcr, Pa., a» tecond class matter 



