Vol. LXXIV. No. 6. JUNE, 1909 



THE 



POPULAR SCIENCE 

 MONTHLY 



EDITED BY J. McKEEM CATTELL 



CONTKNTS 



The Tides and their Causes. Kollin Arthur Harris 521 



Facts concerning the Determination and Inheritance of Sex. Professor 



H. E. Jordan ..... 1 540 



Josiah Willard Gibbs and his relation to Modern Science. Dr. Fielding 

 H. Garrison .... - 551 



Suggestions from Two Cases of Cerebral Surgery without Anesthetics. 



Professor George Trumbull Ladd 562 



Hysteria as an Asset. Dr. Pearce Bailey 568 



Notes on Certain Philosophies of the Day. Professor Alexander F. 



Chamberlain 575 



Formative Influences. Professor G. J. Pearce -^ . 579 



Training College Teachers. Dr. W. B. Pitkin 588 



Okefinokee Swamp. Eoland M. Harper 596 



The Progress of Science : 



Scientific and Educational Meetings ; Justus von Liebig ; Scientific 

 Items 615 



Index to Volume LXXIV 621 



THE SCIENCE PRESS 



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Copyright, 1908, by THE SCIENCE PRESS 



