SCIENCE 



Feidat, Octobek 30, 1914 



CONTENTS 

 Multiplicity of Crops as a Means of Increas- 

 ing the Future Food Supply: Propessoe 

 V. P. Hedrick 611 



Headship and Organization of Clinical De- 

 partments of First-class Medical Schools: 

 Dr. S. J. Meltzek 620 



Eeseareh and Teaching in the University : Pro- 

 pessoe J. McKeen Cattell 628 



Section of Zoology of the American Associa- 

 tion 630 



fie Notes and News 631 



University and Educational News 635 



Disoussioji and Correspondence: — 



Evolution iy Selection of Mutations: De. 

 Arthur M. Miller. Potassium Cyanide 

 as an Insecticide: W. G. Blish 636 



Scientific BooTcs: — 

 Dialogues concerning Two New Sciences: 

 Professor W. F. Magie. Stewart on Chem- 

 istry and its Borderland: Professor Jas. 

 Lewis Howe. Jones on Nucleic Acids: Dr. 

 P. A. Levene 637 



Standardization of Courses and Grades: Pro- 

 fessor W. C. EuEDiGER, Geo. N. Henning 

 AND Wm. a. Wilbur 642 



Special Articles:— 



The Tertiary of the Great Basin and that 

 of the Marginal Marine Province in Cali- 

 fornia: Professor John C. Merriam. The 

 Crenation and Flagellation of Human Ery- 

 throcytes : Wade W. Oliver 643 



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

 review should be sent to Professor J. McKeen Cattell, Garrison- 

 on-Hudson, N. Y. 



MULTIPLICITY OF CBOPS AS A MEANS OF 



INCBEASING THE FUTUBE FOOD 



SUPPLY! 



Economists prophesy a deficiency in the 

 world's food supply. The cost of living 

 everywhere portends accuracy in their 

 divination. The fast and furious struggle 

 between nations and individuals for land 

 upon which to grow food augurs lean years 

 to come. Census enumerations of popula- 

 tion presage sooner or later a dearth of 

 ammunition among the multiplying peo- 

 ples of the earth to carry on the battle of 

 life. Of all this you need to be reminded 

 rather than informed. 



So many men have stated and attempted 

 to solve the problem of the future food 

 supply that it would seem that the subject 

 has been wholly talked out from the facts 

 at hand. Indeed, there has been so much 

 said and written about hard times at hand 

 and famine ahead that I doubt if you are 

 pleased to have your premonitions reawak- 

 ened by further forebodings and to be 

 forced, through the prestige of the presi- 

 dent's chair, to give attention to a subject 

 which has been so much discussed. Thrash- 

 ing over old straw in the presidential chair 

 is, I quite agree with you, a most abomin- 

 able practise and I have done my best to 

 bring a few sheaves of grain to the thrash- 

 ing I am now beginning. 



Agricultural economists discuss three 

 rather general means of securing a food 

 supply for those who live later when the 

 earth teems with human beings. These 

 are: conservation of resources; greater 

 acreages under cultivation; and increased 



1 Presidential address, Society for Horticultural 

 Science, Washington, D. C, 1913. 



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OCT 30 1911 



