

Voi, LVIL Ko 3. , JULY, 1900. 



THE 



POPULAR -SCIENCE 

 . MONTHLY. 



EDITED BY J. McKEEJf CATTELL. 



CONf'feNTSJ 



President G. K. Gilbert, American Association for the Advancement 



of Science. (Frontispiece.) 226 



Chapters on the Stars. Professor Simon Newcomb 227 



Preventive Inoculation. Dr. W. M. Haffkine 240 



Colonies and the Mother Country. James Collier 248 



Technioal Education at the Massachusetts Institute of Technology. 



Professor G. F. Swain 257 



The Psychology of Crazes. Professor G. T. W. Patrick 285 



Some Phases of the Earth's Development in the Light of Recent 



Chemical Research. Professor Edward Renouf 295 



A Preliminary Account of the Solar Eclipse of May 28, 1900, as 



observed by the Smithsonian Expedition. Dr. S. P. Langley. 302 



Malaria and the Malarial Parasite. Dr. Patrick Manson 310 



New Sources of Light and of R6ntgen Rays. Dr. Henry Carrington 



Bolton 318 



Discussion and Correspondence : 



Washington as an Explorer and Surveyor. Dr. Charles D. Walcott. Science 



and Fiotion; Physicist 323 



Scientific Literature : \ 



Mathematical Physics ; Botany ; Biology ; Cytology ; Education 327 



The Progress of Science : 



The President of the American Association ; The New York Meeting of the Asso- 

 ciation ; Meetings of Scientific Societies ; Scientific and Educational Institutions 

 of New York City ; The Endowment of American Universities ; State Support and 

 Individual Gifts ; Appropriations for the U. S. Department of Agriculture ; Sir 

 Fox-Lane Pitt-Rivers; Science and Fiction; Mosquitoes and Malaria 332 



MoCLURE, PHILLIPS & COMPANY, 



NEW YORK: 141 EAST 26th STREET, 

 LONDON: 10 NORFOLK STREET, STRAND, W. C. 



Sinolb Number, 25 Cents. Yearly Subscription, $3.00. 



OOPYKIQHI, 1900, BY McCLURE, PHILLIPS <fc COMPANY. 

 Entered at the Post Office at New York, and admitted for transmission through the mails at second-class rates. 



