X CONTENTS 



XL Darwin ^gi 



XII. For and against Darwin 477 



XIII. The doctrine of descent based on morphological grounds. 



Gegenbaur and his school ^og 



XIV. Haeckel and monism 505 

 XV. Morphological specialized research under the influence of 



Darwinism : 



I. Anatomy and embryology 518 



2- Cytology 533 



3. Microbiology 544 



4. Vegetable morphology 550 



5. Geographical biology 558 

 XVI. Neo-Darwinism and neo-Lamarckism 562. 



XVII. Experimental biology: 



I. Experimental morphology 574 



1. Experimental heredity-research 583 



3. Biochemistry 594 



4. Animal psychology 599 

 XVIII, Modern theoretical speculations: 



I. Mechanism and vitalism 603 

 1. The idea of species and some problems in connexion 



therewith 613 



Sources and Literature 



Sources 617 



Literature 6x9 



Index of Names follows page 6x9 



