CONTENTS 

 VOLUME VII. 



SCIENCE AND INVENTION. 



Fifty Years of American Science. 



BY W. J. McGee 1 



The Debt of the World to Pure Science. 



BY John J. Stevenson 24 



Scientific Work of the Government. 



BY Michael A. Lane 40 



Geology in the United States. 



BY Rozelle Purnell Handy 47 



The Beginnings of American Astronomy. 



BY Edward S, Holden. 56 ^ 



Some Aspects of American Astronomy. 



BY Simon Newcomb 67 / 



Chemistry in the United States. 



I BY F. W. Clarke 84 



[/ The American Sociologist of the Twentieth Century. / 



BY Michael A. Lane 91 •^ 



Wizard of the Garden. 



BY HoLLis W. Field 105 



History of Electricity in America. 



BY George Herbert Stockbridge 109 v 



The Development of Industrial Electro Chemistry. 

 I BY E. F. ROEBER « 140 



A Quarter Century of Electric Lighting. 



BY Loins Bell 154 



The Transmission of Electric Energy without Wires. 



BY Nikola Tesla 163 



\ Beginnings of the Telephone. 



BY Alexander Graham Bell 171 



iii 



