Vol. LXXIV. No. 2. FEBRUARY, 1909 



THE 



POPULAR SCIENCE 

 MONTHLY. 



EDITED BY J. McKEEM CATTELL 

 CONTENTS 



The National Exposition at Eio de Janeiro. Professor Eobekt DeC. 



Ward 105 



A Biographical History of Botany at St. Louis, Missouri. Dk. Perley 



Spaulding 124 



The Latest Calabrian Disaster. Professor "Wm. H. Hobbs 134 



Jefferson Davis's Camel Experiment. Professor Walter L. Fleming . 141 



Eailroads and the Smoke Nuisance. Clinton Eogers Woodruff . . 163 



Account of a Trip in Southernmost Japan, with Early Eecords of its Dis- 

 covery. Egbert Van Vleck Anderson 161 



An American Contribution to the History of the Physiology of Digestion. 



Professor Lafayette B. Mendel 174 



The Instruments and Methods of Eesearch. Dr. L. A. Batter . . . 184 



The Progress of Science 



The Scientific Meetings at Baltimore ; The Eeport of the Secretary of 

 Agriculture ; Scientific Items 202 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YOEK: Sub-Station 84 

 Single Number, 30 Cents Yearly Subscription, $3.00 



Copyright, 1908, by THE SCIENCE PRESS 



