SCIENCE 





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Friday, January 14, 1916 



CONTENTS 



The American Association for the Advance- 

 ment of Science: — 



The History of the Fertilization Problem: 

 Propessoe Frank E. Lillie 39 



The WorTc and Opportunites of a Depart- 

 ment of Eesearch Medicine in the Univer- 

 sity: Pkofessoe Eichard M. Pearce 53 



Scientific Notes and News 63 



University and Educational News 67 



Discussion and Correspondence: — 



The Determination of Nitrates in Soils: P. 

 S. BuEGESs. A Simple Method for the 

 Elimination of Protozoa from Mixed Cul- 

 tures of Bacteria: Henry N. Jones 67 



Scientific Boohs: — 



Bullcley on Cancer, its Cause and Treatment, 

 Bainbridge on the Cancer Problem: Dr. 

 Leo Loeb. Cooke on The Age of the Ocala 

 Limestone: Professor G. D. Harris 69 



Special Articles: — 

 Peridermium HarJcnessii and Cronartium 

 quercuum: E. P. Meinecke. A Simple 

 Demonstration of the deduced Vapor Pres- 

 sure over a Solution: Dr. Arthur Tabee 

 Jones 73 



The American Mathematical Society: Pro- 

 EEssoR P. ]Sr. Cole 73 



Societies and Academies: — 



The Biological Society of Washington: M. 



W. Lton, Je 75 



M8S. intended for publication and books, etc., intended for 

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

 On-Hudson, N. Y. 



THE AMERICAN ASSOCIATION FOR 

 THE ADVANCEMENT OF SCIENCE 

 THE HISTORY OF THE FERTILIZA- 

 TION PROBLEM 1 



We come together at this season of the 

 year to discuss the latest advances in our 

 science and to listen to the announcement 

 of new discoveries. This implies a philos- 

 ophy of life, an optimistic philosophy ; we 

 would not work as individuals nor assemble 

 as societies if we did not believe that sci- 

 ence is worth while, and that human prog- 

 ress is both possible, and, for some inscrut- 

 able reason, worth working for. This was 

 the philosophy of science in the time of the 

 Greeks, and it is the philosophy of our sci- 

 ence of scarce four hundred years' growth. 

 Modern science, I need hardly say, was en- 

 tirely European in its origin, as is our 

 American scientific population ; and all sci- 

 ence is ours to promote and advance by 

 right of inheritance no less than of intel- 

 lectual sympathy. Now that the great war 

 is so largely arresting the progress of sci- 

 ence in Europe it is our bounden duty to 

 see that there is no halting in America ; we 

 should hold fast to our faith and strengthen 

 our efforts for the advancement of science. 



As we all labor for progress in science, 

 I thought it would not be entirely out of 

 place if, instead of dealing with some new 

 subject, I attempted to lay before you a 

 picture of the total progress in some cen- 

 tral problem of biology; it can be nothing 

 more than a sketch, but it may perhaps 



1 Address delivered before the American Society 

 of Naturalists, and the Zoological Section of the 

 American Association for the Advancement of 

 Science, December 30, 1915. 



