CONTENTS 



CHAPTER I 

 INTRODUCTION 



SECT. PAGE 



i. Historical ... I 



CHAPTER II 

 PHYSICS AND CHEMISTRY 



2. Mechanics and mechanical models 6 



3. The influence of osmotic pressure 10 



4. the percentage of water 12 



5. streaming on osmotic pressure and diosmosis . 15 



6. the viscosity of the protoplasm and cell-sap . . . .16 



7. The viscosity of albuminous solutions 1 8 



8. The influence of temperature on viscosity 20 



9. gravity on rotation 23 



10. The energy expended in a streaming cell 26 



11. Relation between work done in streaming and energy of respiration . 31 



12. Direction of streaming and path of least resistance 33 



13. The sources of energy 35 



14. The influence of free oxygen 3*> 



15. electrolytic oxygen 44 



1 6. Chemical changes connected with streaming .... 45 



17. The electrical and magnetic properties of the cell 45 



1 8. The influence of magnetic forces 49 



19. on freely motile organisms . . . 52 



CHAPTER III 

 PHYSIOLOGY 



20. General 53 



21. Relation between streaming and assimilation 54 



22. growth and streaming 55 



23. The influence of the nucleus 55 



24. changes of concentration ... 57 



25. temperature 59 



26. The effect of sudden changes of temperature ... ... 66 



27. The influence of temperature during anaerobic respiration .... 68 



28. light . 69 



