X CONTENTS. 



CHAPTER V. 



THE CLOTTING OF BLOOD. 



PAGE 

 Coagulation of the blood. Cause of coagulation. Whipped blood. 



The buffy coat. The source of blood fibrin. Artificial clot. 

 Fibrin ferment. Proximate causes of normal blood coagulation. 

 Relation of the blood-vessels to coagulation. Chemical com- 

 position of the blood. Quantity of blood. The life-history of 

 the blood-corpuscles. Chemical composition of lymph ........ 51 



* CHAPTER VI. 

 THE SKELETON. 



Exoskeleton and endoskeleton. The bony skeleton. Segmentation 

 of the skeleton. Homologies of the bones of the anterior and 

 posterior limbs. Peculiarities of the human skeleton ...... , . . 63 



CHAPTER VII. 

 THE STRUCTURE AND COMPOSITION OF BONE. JOINTS. 



Gross structure of the bones. Microscopic structure of bone. Chem- 

 ical composition of bone. Articulations. Joints. Hygiene of 

 the joints .................................................. 85 



CHAPTER VIII. 

 CARTILAGE AND CONNECTIVE TISSUE. 



Temporary and permanent cartilages. Varieties of cartilage. The 

 connective tissues. Elastic cartilage and fibre-cartilage. Ho- 

 mologies of the supporting tissues. Hygiene of the developing 

 skeleton. Adipose tissue .................................. 98 



CHAPTER IX. 

 THE STRUCTURE OF THE MOTOR ORGANS. 



Motion in animals and plants. Amoeboid cells. Ciliated cells. The 



muscles. Histology of striated muscle. Structure of un- 

 striated muscular tissue. Cardiac muscular tissue. The chem- 



istry of muscular tissue. Beef -tea and Liebig's extract ........ 109 



CHAPTER X. 

 THE PROPERTIES OF MUSCULAR TISSUE. 



Contractility. Irritability. A simple muscular contraction. Phys- 

 iological tetanus. Causes affecting degree of contraction. 

 Measure of muscular work. Muscular elasticity. Electrical 

 currents of muscle. Secondary contraction. Secondary tetanus. 

 Source of muscular energy. Physiology of plain muscular 

 tissue . . .127 



