

VOL. XII, NO. 5 



MAY, 1921 



P.4t 



THE SCIENTIFIC 



MONTHLY 





MAR 2 I M 



EDITED BY J. McKEEN CATTELL 



Viol 



CONTENTS 



/ ' 



' 



THE HISTORY OF MATHEMATICS. Professor Ernest W. Brown 385 



DEMOCRATS AND ARISTOCRATS IN SCIENTIFIC RESEARCH. Dr. Esmond 



R. Long 414 



THE CONDUCTION OF RESEARCH. F. H. Norton 424 



A BIOLOGICAL EXAMINATION OF LAKE GEORGE. Professor James G. 



Needham 434 



THE HISTORY OF SCIENCE AS AN ERROR BREEDER. Professor G. A. Miller__439 



THE BIOLOGY OF DEATH— THE CHANCES OF DEATH. 



Professor Raymond Pearl 444 



PUBLISHED FIGURES AND PLATES OF THE EXTINCT PASSENGER PIGEON. 



Dr. R. W. Shufeldt 458 



THE PROGRESS OF SCIENCE: 



Professor Einstein's Visit to the United States; The Massachusetts Institute of 

 Technology and President Nichols; The Service for Scientific News; Scientific 

 Items 482 



THE SCIENCE PRESS 



11 LIBERTY ST., UTICA, N. Y. GARRISON, N. Y. 



Single Number, 50 Cents. Yearly Subscription, $5.00 



COPYRIGHT 1921 BY THE SCIENCE PRESS 

 Entered as second-class matter February 8, 1921, at the Post Office at Utica, N. Y., under the Act of March 3, 1879. 



