228 



SCIENCE. 



[N. S. Vol. VIII. No. 190. 



19. An Apparatus for Demonstrating, in 

 Alternating Currents, the Change of Phase due 

 to either Inductance or Capacity. 



20. An Apparatus for Determining Coefli- 

 eients of Induction. By Professor Sidney T. 

 Moreland, Lexington, Va. 



21. Study of Elastic Fatigue by the Time 

 Variation of the Logarithmic Decrement. By 

 Professor J. O. Thompson, Amherst, Mass. 



22. A Eedetermination of the Ampere. By 

 Geo. W. Patterson and Karl E. Guthe, Ann 

 Arbor, Mich. 



23. Polarization and Internal Resistance of 

 the Voltaic Cell. By Dr. Karl E. Guthe, Ann 

 Arbor, Mich. 



24. A New Gas. By Chas. F. Brush, Cleve- 

 land, Ohio. 



25. Hysteresis Loss in Iron for very small 

 Ranges of Induction (B). By Henry S. Webb, 

 South Bethlehem, Pa. 



26. Note on the Testing of Optical Glass. 

 By Professor W. S. Franklin, South Bethlehem, 

 Pa. 



27. A Lecture-room Experiment in Electro- 

 statics. By Professor W. S. Franklin. 



28. A Study of Galvanic Polarization. By 

 Barry McNutt, South Bethlehem, Pa. 



29. On a Normal Curve of Magnetization of 

 Iron. By S. S. Clark, South Bethlehem, Pa. 



30. Some Determinations of Dielectric 

 Strength. By Professor Thomas Gray, Terre 

 Haute, Ind. 



SECTION C. — CHEMISTRY. 



Tuesday, August 23. (Under the auspices of 

 the American Chemical Society), Morning — An- 

 alytical Chemistry, led by Dr. P. DeP. Eick- 

 etts, Columbia University. Afternoon — Teach- 

 ing of Chemistry, Dr. F. P. Venable, Univer- 

 sity of North Carolina. 



Thursday, August 25. Morning — Inorganic 

 Chemistry, led by Dr. H. A. Wells, Yale Uni- 

 versity. Afternoon — Organic Chemistry, by 

 Dr. Ira Remsen, Johns Hopkins University. 

 Evening — Physical Chemistry, Dr. T. W. 

 Richards, Harvard University. 



Friday, August 26. Afternoon (in one of 

 Harvard University rooms) — Physiological 

 Chemistry, led by Dr. E. E. Smith, New York. 



Saturday, August 27. Morning — Agricultu- 



ral Chemistry led by Dr. H. A. Weber, Ohio 

 University. Afternoon — Technical Chemistry, 

 Dr. N. W. Lord, Ohio State University. 



SECTION D. — MECHANICAL SCIENCE AND ENGI- 

 NEERING. 



Address of the Vice-President, Professor M. 

 E. Cooley, University of Michigan, Ann Arbor, 

 Mich. 



1. High-Speed Influence Machines. By 

 Charles F. Warner, Cambridge, Mass. 



2. Proposed Methods of Determining the 

 Frequency of Alternating Currents. By Carl 

 Kinsley, Falls Church, Va. 



3. Instruments and Methods of Hydrographic 

 Measurements by the United States Geological 

 Survey. By F. H. Newell, Washington, D. C. 



4. The Development of the Topographic 

 Work of the United States Geological Survey 

 and its application to the Solution of Economic 

 and Engineering Problems. By Chas. D. Wal- 

 cott, Washington, D. C. 



5. A new Form of Dynamometer Car. By 

 Professor Lester P. Breckenridge, Urbana, 111. 



6. A Combined Absorption and Transmission 

 Dynamometer. By Professor John J. Flather, 

 Lafayette, Ind. 



7. Some Experiments with a New Form of 

 Impact Testing Machine. By Professor W. K. 

 Hatt, Lafayette, Ind. 



8. Superheating and the Use of Superheated 

 Steam. By Geo. I. Rockwood, Worcester, Mass. 



SECTION E. — GEOLOGY AND GEOGRAPHY. 



Address of the Vice-President : Glacial 

 Geology in America. By Professor H. L. 

 Fairchild, University of Rochester, Rochester, 

 N. Y. 



1. Outline Map of the Geology of Southern 

 New England. By Professor B. K. Emerson, 

 Amherst, Mass. 



2. Basins in Glacial Lake Deltas. By Profes- 

 sor H. L. Fairchild, Rochester, N. Y. 



3. An Exhibition of the Rare Gems and Min- 

 erals of Mt. Mica. By Dr. A. C. Hamlin, 

 Bangor, Maine. 



4. The Hudson River Lobe of the Lauren- 

 tide Ice-sheet. By Professor C. H. Hitchcock 

 Hanover, N. H. 



5. The Age of the Amboy Clay Series as in- 



