The American Naturalist 



A Monthly Journal, established in 1867. Devoted to the Advancement of ^Biological Scieneee 



OONTEHT8 OF THE MARCH NUMBER 



Lamarck Manuscripts at Harvard University. Professor 

 Symb^s™™ Fe^" Prothallia. Professor Douglas 



n»&Su^*ofth1fTertferyMaininah and the Impor- 

 tance of Their Migrations. Professor Charles 

 Obse^atwna and 



Rotes aad Literature z^Icht hology— Ichthyological Notes, 

 The Stalked Crinoids of the SIboga Expedition, 

 Austin Hobart Clark. Animal Pathology— Try- 

 paoogotue ^iseates^Pjofsssor^HEjr&Y ^B. Ward. 

 Higher Animals, Professor Herbert 8. Jennings. 



CONTENT8 OF THE APRIL NUMBER 



The Taxonomic Aspec^of the Species Question. Pro- 

 The Taxonomic Aspect of the Species Question. Dr. 

 The^Physiologic^Aspect^of the Species Question. Pro- 

 The^Phyjdological Aspect of a Species. Dr. D. T. 

 An Ecologic View of the Species Conception. Professor 

 An Ero^glcal Aspect o^toe^Conception of Speeies. Dr. 



Shorter^rUeks and "orrespondence : Otter Sheep, Pro- 

 Notes 5 and ^Literature: ^E^rimmtal^Zoology—^ Prrib- 



Qeographical Distribution; Origin of the Bermuda 



Decapod Fauna. Professor A. E. "Vebrill. 

 On the Interpretation of Certain Tropisms of Insects. 



of their mgrationa^PpSe^rCaABi.EsDEPfiRET. 

 Oa Xerophytie^AdaptetlonaoOieaf Btjuctarein Yuccas, 

 The Biological Laboratory of the Bureau of Fisheries at 



•f 1907* 3 T^Fran' : B. I g rt ° f B? 0rk f ° r th ® 8688011 



Notes and Liierature ^HiM^^maia— Kenewed In- 

 terest injteotnt Crinoi^ C f ^tma^e- 



CONTENT8 OF THE JUNE NUMBER 



Moodie. h i to th Organ 

 isms. Professor Henry B. Ward. ^ fctni 



Physiology. ProfessorJ^REDEB ic ContrIbutlonB 



CONTENT8 OF THE JULY NUMBER 



The Leg Tendons of Insects. Professor C. W. Wood- 

 Ataormafincisor. of Marmota Monax L, Charles 



A K I>ANiEL h l C0 B ° f Pl€thodon Cinereua. Hugh 

 ■""aSeSfaJc Mc k^V ? Cr ^ | uccessio £ the 

 Kotea^anTLite P rofe ^ r ^ EE ^^_^. Shimeb. ^ 





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