VOL. XLI, NO. 488 



AUGUST. 1907 



THE 



AMERICAN 



NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIENCES 

 IN THEIR WIDEST SENSE 



CONTENTS 



Pag, 



I. Observations on the Natural History of Diving Beetles 



JAMES G. NEEDHAM AND HELEN V. WILLIAMSON 477 

 II. Habits of the Short-tailed Shrew, Blarina brevicauda 'Say) 



A. FRANKLIN SHULL 496 



The capilaliznlion of sj)ocific luinies. Anthropology; Handbook of 

 Amerirmi Indiana north of Mexico.— tiamc-^ of the North Aniericnn 

 Indian,s. Zoology: Oogenesis in insects.— Parthenogenesis of BaciUus 



logical literature. Botany; The fungi of termite nests.-The longleaf 

 pine. — Purple -producing bacteria. Geo%/; Rate of recession of 

 Niagara Falls 528 



BOSTON, U. S. A. 

 GINN & COMPANY, PUBLISHERS 

 29 BEACON STREET 



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