SCIENCE 



Friday, October 22, 1915 



CONTENTS 

 Applied Chemistry: Db. L. H. Baekeland. . 547 



Doctorates conferred iy American Universities. 555 



The Trustees of the University of Pennsyl- 

 vania on Academic Freedom 565 



Scientific Notes and News 566 



University and Educational News 569 



Discussion and Correspondence: — 



Parasites of the Muskrat: Dk. Feanklin D. 

 Babkeb. The Chemical Composition of 

 Bornite: De. Edgar T. Whebet. Wimd 

 Gaps: Pbopessob Akthde M. Miller. 570 



Scientific BooTcs: — 

 Sosenthaler's Der Nachweiss organischer 

 Veriindungen: Dr. Eoss Aiken Gobtnee. 

 Turner on Molecular Assoeiati/m: Pbofessoe 

 Louis Kahlenbeecj 573 



Special Articles: — 



On the Coefficient of Correlation as a Meas- 

 ure of Relationship : Pbopessob Chaeles N. 

 Moore. An Aberrant Ecological Form of 

 Unio complanatus Dillwyn: Stephen G. 

 EiCH 575 



The American Phytopathological Society: Dr. 

 C. L. Sheae • 580 



The American Association for the Advance- 

 ment of Science: — 

 Section B, Physics: Dr. W. J. Humpheets. 584 



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

 rcTiew should be sent to Professor J. MoKeen Cattell, Garrison- 

 On-HudsOQ. N. Y. 



APPLIED CSEMISTBTi 



It is only three years ago that a Brook- 

 lyn alderman, who, in the absence of the 

 mayor of New York, had to welcome the 

 visitors to the International Congress of 

 Chemistry, addressed them as if they were 

 druggists or pharmacists. 



After all, he made not a much greater 

 mistake than many so-called educated men 

 who obtained a B.A. and yet are ignorant 

 enough of elementary scientific knowledge 

 to imagine that the main occupation of a 

 chemist is to analyze substances and detect 

 falsifications. 



Even in England, a pharmacist is cur- 

 rently designated as ' ' chemist, ' ' while a real 

 chemist is called an "analytical chemist." 



But the European war has done much 

 to correct some of these mistaken notions 

 of the public at large. Our daily press has 

 now more or less acquainted this country 

 with the fact that in our national make-up 

 there is such a thing as chemical problems, 

 I doubt, however, whether the unthinking 

 masses have begun to realize that aside of 

 the so-called chemical industry, practically 

 every other industry, in' fact, every enter- 

 prise, has chemical questions to contend 

 with, and that chemical industry itself is 

 intimately interwoven with the great net- 

 work of every modern industrial or agri- 

 cultural state ; that the economic welfare of 

 our country and the health of its citizens 

 are largely dependent on the way we utilize 

 our chemical knowledge. 



The present war has been aptly called a 

 "chemical war," because efficient work of 



1 An address presented at the meeting of the 

 American Chemical Society, Seattle, Wash. 



