CONTENTS xi 

 CHAPTER VI 

 TRANSPORT OF MATERIALS THE VASCULAR SYSTEM 



PAGE 



General Arrangement - 132 



The Blood - 135- 



Internal Secretions - - 136 



The Kidneys 137 



Lymph 140 



The Proteins of the Plasma 141 



The Salts of Blood - 142 



Viscosity 144 



The Regulation of the Blood Supply 145 



The Capillaries 147 



The Regulation of the Heart Beat - 148 



Origin and Transmission of the Heart Beat 150 



Fission 151 



Conjugation 152 



Sexual Reproduction 152 



Heredity 156 



Variation 157 



Adaptation - 158 



Struggle for Existence 159 



PART II. LABORATORY WORK 



CHAPTER I 



The Microscope 163 



Nature of Protoplasm 164 



The Leucocytes of the Blood - 165 



Movement of Protoplasm - 166 



Dark-ground Illumination - 166 



Brownian Movement - 166 



Surface Tension - 167 



Adsorption - 168 



Cell-membrane and Permeability - 168 



Osmotic Pressure - 169 



Blood Corpuscles - 169 



Plasmolysis - 171 



Turgor - 171 



Contractile Vacuole - 171 



Direct Measurements of Osmotic Pressure 171 



Electrolytic Dissociation 173 



Indicators 175 



