SCIENCE 



Editoeial Committee : S. Newcomb, Mathematics ; R. S. Woodward, Mechanics ; E. C. Pickeeinq 



Astronomy; T. C. Mendenhall, Physics; E. H. Thurston, Engineering; Iea Eemskn, Chemistry; 



J. Le Contb, Geology; "W. M. Davis, Physiography; O. C. Marsh, Paleontology; W. K. 



Brooks, C. Hart Mberiam, Zoology ; S. H. Scudder, Entomology ; N. L. Beitton, 



Botany; Henry F. Osborn, General Biology; H. P. Bowditch, Physiology; 



J. S. Billings, Hygiene ; J. McKeen Cattell, Psychology ; 



Daniel G. Beinton, J. W. Powell, Anthropology. 



Friday, FESEtrAEY 26, 1897. 



CONTENTS: 



Earth-crust Movements and their Cmises ■ JOSEPH 

 Le Conte 321 



Notes on Certain Beliefs concerning Will Power 

 among the Siouan Tribes : Alice C. Fletcher..331 



TJie Sand-plains of Truro, Wellfleet and Eastham : 

 Amadeus W. Geabau 334 



A New Method of Driving an Induction Coil : Chas. 

 L. Norton, Ralph R. Lawrence 335 



Current Notes on Physiography : — 



The Colorado Plains ; The Pre-glacial Kanawha ; 

 TheBivers.of Saginaw Bay: W. M. DAVIS 336 



Current Notes on 3Ieteorology : — 



Chalk-plate Weather Slaps; Prises for School Work 

 in Meteorology ; Some Interesting Reprints : E. 

 Dec. Ward 337 



Current Notes on Anthropology : — 



77ie Age of Man ; On Small Chipped Flints : D. 

 G. Beinton 339 



Scientijio Notes and Neios 339 



University and Educational News 343 



Discussion and Correspondence: — 



J7ie Argentaurum Papers : C. A. Young. Former 

 Extension of Greenland Glaciers: Ralph S. 

 Tare. Compliment or Plagiarism: George 

 Beuce Halsted. The National University — A 

 Suggestion: WILLIAM Teelease .343 



Scientific Literature : — • 



Groos on Die Spiele der Thiere : J. Maek Bald- 

 AVIN. BalPs History of Matliematics ; Cajori's 

 History of Elementary Mathematics: E. M. 

 Blakk. Klebs on Die Bedingungen der Fort- 

 pflanzungbei einigen Algenund Pilzen : Geo. P. 

 Atkinson. Codice Messieano Valicano : D. G. 

 Beinton 347 



Scientific Journals : — 

 American Chemical Journal: J. Elliott Gil- 

 pin. The Journal of Comparative Neurology; 

 American Geologist 356 



Societies and Academies : — 



The New York Academy of Sciences — Section of 

 Astronomy and Physics : Wm. HallocK ; Sec- 

 tion of Geology: J. F. Kemp. New Yo7-k Sec- 

 tion of the American Chemical Society : DUEAND 



Woodman. Geological Society of Washington: 

 W. F. MoESELL. Boston Society of Natural His- 

 tory: Samuel Henshaw. The Academy of Sci- 

 ence of St. Louis : Wm. Teelease. Tlie Texas 

 Academy of Science: Feedeeic W. Simonds. 

 The Geological Club of the University of Minnesota : 



Chaeles p. Beekey 359 



NeiD Books 364 



MSS. intended for publication and books, etc., intended 

 for review sliould be sent to the responsible editor, Prof. J. 

 McKeen Cattell, Garrison-on-Hudson, N. Y. 



EABTH-CBUST MOVEMENTS AND THEIR 

 CA USES. * 



INTRODUCTION.- — SOURCES OF ENERGY. 



Nearly all the processes of nature visible 

 to us — well-nigh the whole drama of nature 

 enacted here on the surface of the earth — 

 derive their forces from the sun. Currents 

 of air and water in their eternally recur- 

 ring cycles are a circulation driven by the 

 sun. Plants derive their forces directly, 

 and those of animals indirectly through 

 plants, from it. All our machinery, 

 whether wind-driven, or water- driven, or 

 steam-driven, or electricity-driven, and even 

 all the phenomena of intellectual, moral 

 and social activity, have still this same 

 source. There is one, and but one, ex- 

 ception to this almost universal law, namely, 

 that class of phenomena which geologists 

 group under the general head of igneous 

 agencies, comprising volcanoes, earthquakes, 

 and more gradual movements of the earth's 

 crust. 



* Annua] address by the President, Joseph Le 

 Conte, read before the Geological Society of America, 

 December 29, 1896. 



