TABLE OF CONTENTS. 



Introduction, 



PART I. 



GENEKAL PHYSIOLOGY. 



The Physiology of Animal Cells. 



SECTION I. 



The Structure of Organized Bodies. 



I. The General Properties of Cells, 12 



II. The Origin op Cells, 14 



III. The Modification in the Form of Cells, .' . . . 26 



IV. The Development of Tissues and Organs, .... 31 



SECTION II. 



Cellular Physics. 



I. The Physical Processes in Cells, 37 



1. Cohesion, 38 ; 2. Adhesion, 40 ; 3. Capillarity, 40 ; 4. Solution, 43 ; 

 5. Imbibition, 44 ; 6. Filtration, 48 ; 7. Diffusion of Liquids, 49 ; ' 

 8. Osmosis, 51; 9. Diffusion of Gases, 56 ; 10. Absorption of Gases, 

 58. 



II. The Physical Properties of the Tissues, .... 61 



1. Cohesion, 62 ; 2. Elasticity, 65 ; 3. Optical Characteristics, 68 ; 4. 

 Electrical Phenomena, 70. 



III. Mechanical Movements in Cells, 70 



1. Motion Produced by Imbibition in Cells, 70 ; 2. Protoplasmic Move- 

 ments, 72 ; (1) Movements in Protoplasmic Contents of Cells, 

 73 ; (2) Ciliary Movement, 77 ; (3) Movement in Specialized 

 Contractile Tissues, 81. 



General Conditions Governing Protoplasmic Movement, . . 82 



1. Temperature, 82; 2. Degree of Imbibition, 82; 3. The Supply of 

 Oxygen, 83; 4. Various Chemical and Physical Agents, 84. 



(vii) 



