The Popular Science Monthly 



Entered in the Bast Office in Lancaster, Pa., as second-class mailer. 



CONTENTS OF JUNE NUMBER 

 Concerning Variations in Animals and Plants, 

 President David Starr Jordan. 



The Human Side of the Indian. Dr. Alexander F. 

 Chamberlain. 



The Fresh-water Fishes of South and Middle Amer- 

 ica. Professor C. H. Eigenmann. 



Facts about Nostrums. Dr. Horatio Wood, Jr. 



Times and Places of Earthquakes. Professor H. H. 

 Turner. 



Radio-Activity and Volcanoes. Major C. E. Dutton. 



An Eclipse Expedition to Spain. Dr. A. S. Mit- 

 chell. 



Shorter Articles : 



The Spanish American Type. Dr. Gustave 

 Michaud. 



The Progress of Science : 



The Earthquake on the California Coast; The 

 Engineering Building of New York City; The 

 Carnegie Foundation for the Advancement of 

 Teaching : Scientific Items. 



Index to Vol. LXVIII. 



CONTENTS OF JULY NUMBER 



The Relations of Embryology to Medical Progress. 

 Professor Charles Sedgwick Minot. 



The Largest American Collection of Meteorites. L. 

 P. Gratacap. 



The Plane of Ether. 

 Jordan. 



President David Starr 



Are the Elements Transmutable, the Atoms Divisible 

 and Forms of Matter but Modes of Motions. Pro- 

 fessor S. Lawrence Bigelow. 



Pure Food Legislation. Robert McD. Allen. 



Wooden Flowers. Dr. Orville Paul Phillips. 



The Geologic.°.l Prelude to the San Francisco Earth- 

 quake. George H. Ashley. 



Our Greatest Earthquakes. Myron Leslie Fuller. 



Shorter Articles : 



The Typhoid Fever Epidemic 

 Edyth V. Matzke. 



The Progress of Science : 



at Palo Alto. 



The American Association for the Advancement 

 of Science; The Boston Meeting of the American 

 Medical Association ; The New Harvard Medical 

 School; Mr. Adams on the American College; 

 The Causes of Death ; Scientific Items. 



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