THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIEN 

 IN THEIR WIDEST SENSE 



CONTENTS 



I. A Graphic Method of Correlating Fish Environment and Distribution 



ALBEET H. WRIGHT 361 



II. The Uicrogametophyte of the Podocarpineae 



E. C. JEFFBEY and M. A. CHEYSLEE 355 



III. The Problem of Color Vision JOHN M. DANE 365 



IV. The Breeding Habits of Amblystoma punctatum Linn. BEETEAM G. SMITH 381 



V. The Staff-tree, Ce/astrus scandens, as a Former Food Supply of Starving 



Indians FEANE T. DILLINGHAM 391 



VI. Notes and Literature : Genera/ Biology; The spirit of nature study.— Hetcro- 



genesis. Zoology: Anatomical terminology. — The blending and over- 

 lap of instincts in birds. — Variation of scutellation in the garter 

 snakes. — A method for removing the gelatinous coats of eggs. — The 

 star-nosed mole on Long Island, N. Y. — Notes. Botany; Cytology 

 and mutation. — Variation and differentiation. —Cotton. — Notes. 

 Geology; The elements of geologj' . . . • 396 



VII. Publications Eeceived 411 



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