Contents 



XI 



Page 



Chapter 



1 . Introduction ^ 



2. Life and Experiment ^^ 



3. The Protoplasmic System 3^ 



4. The Ectoplasm 75 



5. General Properties of the Ectoplasm lO^ 



6. Water ^^4 



7. The Fertilization-process ^47 



8. The Fertilization-reaction J^^4 



9. Parthenogenesis ^^^ 

 10. Cell-division ^47 

 I I . Cleavage and Differentiation 280 



12. Chromosomes and Ectoplasm 34^ 



13. Ectoplasm and Evolution 354 



14. Conclusion 3^- 



15. Bibliography 37^ 

 Index of Authors 3^^ 

 Index of Subjects 3^4 



50120 



