Vol. LXXX1V, No. 2 FEBRUARY, 19U 



THE 



POPULAR SCIENCE 



MONTHLY 



L I S R A R Vjoo 



EDITED BY J. McKEEN CATTELLS& +*+ /. 



CONTENT8 



The Physical Laboratory and its Contributions to Civilization. Professor 

 Arthur Gordon Webster 105 



The Origin and Evolution of the Nervous System. Professor G. H. 



Parker 118 



Current Progress in the Study of Natural Selection. Dr. J. Arthur 



Harris 128 



The Hibernation of Certain Animals. The Late Walter L. Hahn . 147 



Some Abnormalities in Apple Variation. W. J. Young . . .158 



Science and Poetry. Dr. Charles W. Super 166 



The Rural Opportunity and the Country School. Joseph Woodbury 



Strout 176 



Early Geological Work of Thomas Nuttall. Dr. Charles Keyes . . 184 



The Struggle for Equality in the United States. Professor Charles F . 



Emerick 188 



The Progress of Science : 



The Atlanta Meeting of the American Association for the Advancement of Science ; 

 The Work of the Council of the Association ; The Address of the President ; Scien- 

 tific Items ........... 198 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YOKE : Sub-Station 84 

 Single Numbeb, 30 Cents Yearly Subscription, $3.00 



Copyright, 1913. by THE SCIENCE PRESS 



