SCIENCE 



Friday, June 22, 1917 



CONTENTS 

 The Sources of Nervous Activity: Pkofessoe 

 G. H. Pabker 619 



An Address to the Graduating Class of the 

 Harvard Medical School: Professor W. T. 

 Councilman 626 



National Service on the Fart of Zoologists 

 and Zoological Laboratories 627 



Scientific Events: — 

 Suspension of the Kew Bulletin; Daylight 

 Saving; The Smithsonian Station for the 

 Study of Solar Radiation; The Aquariwm of 

 the California Academy of Sciences 630 



ic Notes and News 632 



University and Educational News 635 



Discussion and Correspondence: — 



An Institute for the History of Science: 

 Bert Eussell. A Cure for Shock? G. V. 

 N. D 635 



Scientific Books: — 



Howard, Dyar and Knai on the Mosquitoes 

 of North and Central America: Professor 

 T. D. A. COCKERELL 637 



Notes on Meteorology and Climatology: Dr. 

 Charles F. Brooks 639 



Special Articles: — 



The Distribution of Endemic Species in 

 New Zealand: Professor Hugo De Vries. 641 



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

 review should be sent to Professor J. McKeen Cattell, Ga 

 On-Hudson, N. Y 



THE SOURCES OF NERVOUS ACTIVITY' 



I CAN not proceed with what I have to 

 say without speaking first a word of con- 

 gratulation and thanks to those whose ma- 

 terial and intellectual resources have made 

 the Scripps Institution for Biological Re- 

 search an actuality. Biologists the world 

 over are coming to be more and more de- 

 pendent for their training and inspiration 

 upon just such establishments as this. The 

 introduction into our institutions of learn- 

 ing of the laboratory with its unique and 

 novel educational methods was indeed a 

 vast step in modern progress, but it can be 

 said in no sense to have rendered super- 

 fluous the laboratory designed for pure re- 

 search. This, from the time of Davy and 

 Faraday, has retained its original function 

 unimpaired and has been the means of di- 

 recting mankind to many of his most profit- 

 table lines of endeavor. Such research in- 

 stitutions, which by a happy concurrence of 

 events have been much on the increase of 

 recent years, must always remain the high- 

 est shrines of science. They originate, they 

 conserve, thej' hand on ; and all this is done 

 without the interference of the pedagogue ; 

 in other words, their scholarship, to use 

 that term in its best sense, is of the highest 

 order. In them the true spirit of science is 

 better exemplified than in any other type 

 of institution that we possess. It is there- 

 fore a time for congratulation when the 

 Scripps Laboratory can open its doors more 

 widely than ever before to those who have 

 reason to make use of its abundance. 



It has been in such institutions as this 



1 A dedicatory address delivered August 9, 1916, 

 at the Scripps Institution for Biological Eesearch 

 of the University of California. 



