VOL. XLI, NO. 483 



MARCH, 1907 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIENCES 

 IN THEIR WIDEST SENSE 



CONTENTS 



I. studies on the Ophioglossacese PROF. D. H. CAMPBELL 189 



II. Polygamy and other Modes of Mating among Birds DE. E. W. SHUyELDT 161 

 in. On the Wood Bails, genus Aramides, occurring north of Panama 



OTJTEAM BANGS 117 

 IV. Notes and Literature : fi/o/o^/. The Reception of the Mutation Theory. Mon- 

 ument to Theodor Schwann, Fitch's Basis of Mind and Morals; Geology, 

 The Reconstruction of the Continents of Tertiary Times, The Mountains 

 of Cape Colony, Natural Mounds, Ancient Glacial Periods; Physiology. 

 Hough and Sedgwick's Physiology; Zoology. Guyer's Animal Microl- 

 ogy, MoUusca of lUinois and Michigan, A Monograph on Anurida; 

 Botany, A popular book on Canadian Wild Flowers, Notas, The Journals 189 



BOSTON, U. S. A. 



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