VoL. XXXIX, No. 461 MAY, 1905 
THE : 
AMERICAN 
/ 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE £ 









CONTENTS 
PES — — 
1. Afünities of the Genus Equisetum - ; PROFESSOR D. H. CAMPBELL 273  — 
I. M pic Plants . D. D. JACKSON 287° 
II. Ser of North American re Xx. demo re - 
IV. een ; PROFESSOR M. A. WILLCOX 325 
V. Habits of West Indian Whitebait . - .. = KH. CLARK 385 
VI. Notes and Literature: Zoölogy, Fishes and aiao Essays on Trans-' 
formism, Morphology and Anthropology, Northern Plankton, wild : 
Birds and. their. Mioa Me nee Pagon Ferns and their. Allies 

