The American Naturalist 



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

 with Special Reference to the Factors of Organic Evolution and Heredity 



CONTENTS OF THE FEBRUARY NUMBER 



The Law of Geminate Species. President David Stabb 



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CONTENTS OF THE MARCH NUMBER 



^ m |r S HFORD U DSA^ latHarTBrd UniTersit y- Professor 

 Sym HocGHTO C 6rn " Prothallia - Professor Douglas 



Qaestions^regar^^ 



of the Maimer ofaa^^the^Hand^ Dr^FRANK 



CONTENTS OF THE APRIL NUMBER 



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 ^MacDougS 81 ° f * SpeCieS - Dr ' D * T " 

 f^ilcKcl^ty^™ Conce P tion - Professor 

 An Ig ^*^^*'* of the Conception of Species. Dr. 



CONTENTS OF THE MAY NUMBER 



of their Mi^ton^Pr^^ 



A^vM^d^ Yuccas, 

 N °^ere a ^n ]U Becenr Ci^^^^^C^^^ Tn " 



The Ancestry of the Caudate Amphibia. Dr. Roy L. 

 lto tomr C profe™ d H dr Relatl0n " hlp to other 0T & a ' 





Some Amoeba Studies, G. N. C. Bijmriinental 

 Z'johgy— Regeneration, M. 



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