SCIENCE 



Editoeial Committee : S. Newcomb, Mathematics ; R. S. Woodwaed, Mechanics ; E. C. Pickeeing, 



Astronomy; T. C. Mendenhall, Physics; E. H. Thubston, Engineering; lEA Eemsen, Chemistry; 



J. Le Conte, Geology; W. M. Davis, Physiography; 0. C. Maesh, Paleontology; W. K. 



Beooes, C. Hakt Meeeiam, Zoology; S. H. Scuddee, Entomology; N. L. Beitton, 



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



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



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



G. Beown Goode, Scientific Organization. 



Friday, June 12, 1896. 



CONTENTS: 



Weismann on Germinal Selection: E. G. CONKLIN..853 

 The Smeeth Separatiny Apparatus : J. S. DILLEE..857 



Current Notes on PliysiograpJiy : — 



Valleys of the Ozark Plateau; Coastal Desert of 

 Peru ; LaJces in the Sahara near Timbuktu ; Physi- 

 ography of 3Iontenegro: W. M. Davis 858 



Current Notes on 3Ieteorology : — 

 International Cloud Stations ; Illustrations of Cloud 

 Tyjies; The St. Louis, 3Io., Tornado of Slay 37th; 

 Climate of the Falkland Islands : E. De C. W aed. .860 



Current Notes on Anthropology : — 

 Racial Elements in Assam; The Tupi Linguistic 

 Stock: D. G. Beinton 861 



Scientific Notes and News : — 



The Colors Named in Literature ; General 861 



University and Educational News 865 



Discussion and Correspondence : — 



Professor Bigeloio's Solar 3Iagnetic Work : M. 



Variation of Glaciers : Haeey Fielding Eeid. 



Life Habits of Phrynosoma : E. "W. Shufeldt. 



Boios and Arrows of Central Brazil : O. T. MASON..866 



Scientific Literature : — 



Fossil Plants of the Wealden : Lestee F. "Waed. 

 Lesley's Summary Description of the Geology of 

 Pennsylvania: John J. Stevenson. 3Ieteoro- 

 logieal Reprints: E. De C. Waed 869 



Scientific Journals : — 



Psyche 878 



Soeieties and Academies : — 



Biological Society of Washington: F. A. Luc AS. 

 Geological Society of Washington : W. F. MoE- 

 SELL. Academy of Natural Sciences of Philadel- 

 phia: Edw. J. Nolan 878 



New Books 880 



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

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

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



WEIS3IANN ON GER3IINAL SELECTION. 



This last contribution of Prof. Weismann 

 to his system of inheritance and evolution 

 hypotheses was presented to the Interna- 

 tional Congress of Zoologists at Leyden last 

 September. It was published in German 

 at the beginning of the current year, and 

 has just appeared in English as ITo. 19 of 

 the Religion of Science Series (Open Court 

 Publishing Co., Chicago). 



It is evident from many expressions 

 throughout the paper that Prof. Weismann 

 considers this one of the most important of 

 all his contributions on the evolution prob- 

 lem, and even those who cannot accept this 

 most advanced and in some respects most 

 speculative of all his hypotheses will never- 

 theless be inclined to regard the paper as 

 important in marking some fundamental 

 changes in Weismann's position. 



During the long continued discussion be- 

 tween Weismann, Spencer and others there 

 was a feeling in certain quarters that some- 

 thing was wrong with the methods em- 

 ployed and that the deadlock of opinion 

 could not be broken by inductive reason- 

 ing alone. Weismann's present paper, how- 

 ever, gives evidence that many of the ob- 

 jections raised by his opponents have taken 

 deep hold upon him, and have, in fact, con- 

 vinced him that his former position was 

 untenable. " The real aim of the present 

 essay," says Weismann, " is to rehabilitate 

 the principle of selection. If I should sue- 



