The American Naturalist 



A Monthly Journal, established in 1867, Devoted to the Advancement of the Biological Science, 

 with Special Reference to the Factor* of Organic Evolution and Heredity 



00NTENT8 OF THE MAY NUMBER 



Facts about the "Lobster Pearl" Professor Francis 

 Shorter Artfcte and fb^^J^^g^ 



the* Logprhead Turtle. Henry A. Pilsbby. The 

 Notes and Literature: Biometries— Becent Quantitative 



mosdPeari- ^^^ <0 j^^y— The^Effects of 



^^The^s^e^P^a^^cal.Response. The Late Pro- 



The Place ot Plant Responses in the Categories of Sensi- 

 tive Reactions. Professor Frederick C. Newcombe. 

 The Larva and Spat of the Canadian Oyster. Dr. J. Saf- 

 The Alimentary^ Canal of a Carboniferous Salamander. 



6h ° Spawning ^aWts of Hydroides Dianthus. Professor 

 Notes andJLiterature^ ^ j^^^^ . 

 wlS^reato^and DaVwinfcnVs w2kieSvfl?K. 



° n Uoif ffDapludaf 1 ^. X^M^LSdos? Eeproduo " 



Shorter ArHclea and tarrespondence : The Age of Speed 

 gote» Md^lterafau^^Bngao on ^x-Deteiroinatiou and 



CONTENTS OF THE AUGUST NUMBER 



Spiegler's "White Melanin" as Related to Dominant or 



Nuclear Phenomena of Sexual Reproduction in the 



Algse. Dr. Bradley Moors Davis. 

 Nuclear Phenomena of Sexual Reproduction in Fungi. 



The Pose of the Sauropodoua Dinosaurs. Da. W. D. 



Shorter Articles and Discussion ; Evolution without Iso- 



CONTENTS OF THE OCTOBER NUMBER 



Notes and Literature : Notes on Ichthyology,^ President 



Single Number 35 Cento Yearly Subscription, $4.00 



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Garrison, N. Y. Sub-Station 84 : NEW YORK Lancaster, Pa. 



