Vol. LXVI. No. 3 JANUARY, 1905 



THE 



POPULAR SCIENCE 

 MONTHLY. 



" - . So: 



EDITED BY J. McKEEJV CATTELL 

 CONTBNTS 



Some Experiments of Luther Burbank. President David Starr Jordan 201 



The Present Problems of Paleontology. Professor Henry Fairfield 

 Osborn 226 



Social and Political Effects of Immigration. Dr. Allan McLaughlin 243 



Galileo. Dr. Edward S. Holden 256 



Radioactivity and Matter. The late Professor Clemens Winkler . . 267 



Educational Problems. The Right Reverend the Lord Bishop op 

 Hereford 273 



The United States Pharmacopoeia. Dr. H. C. Wood 279 



The Mosquito Investigation in New Jersey. Professor John B. Smith 281 



The Progress of Science : 



The Presidency of the Carnegie Institution ; Con vocation Week at the University 

 of Pennsylvania; The U. S. Department of Agriculture; Thomas Messinger 

 .Drown ; Scientific Items 287 



THE SCIENCE PRESS 



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NEW YORK: Sub-Station 84 

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