VU1 CONTENTS. 



CHAPTER IV. 



THE INTERNAL MEDIUM. 



PAGE 



The external medium. The internal medium. The blood. The 

 lymph. Histology of blood. Blood crystals. Histology of 

 lymph 39 



CPIAPTER V. 



THE CLOTTING OF THE BLOOD. 



The coagulation of blood. Causes of coagulation. "Whipped 

 blood. The buffy coat. Uses of coagulation. The fibrin 

 factors. Artificial clot. The fibrin ferment. Exciting causes 

 of coagulation. Relation of blood-vessels to coagulation. 

 Composition of the blood. Quantity of blood. Origin and fate 

 of the blood corpuscles. Chemistry of lymph 50 



CHAPTER VI. 



THE SKELETON. 



Exoskeleton and endoskeleton. The bony skeleton. Segmenta- 

 tion of the skeleton. Peculiarities of the human bony skele- 

 ton 62 



CHAPTER VII. 



THE STRUCTURE AND COMPOSITION OF BONE. JOINTS. 



Gross structure of the bones. Microscopic structure of bone. 

 Chemical composition of bone. Hygiene of the bony skeleton. 

 Articulations. Joints. Hygiene of the joints 86 



CHAPTER VIII. 



CARTILAGE AND CONNECTIVE TISSUE. 



Temporary and permanent cartilages. Varieties of cartilage. 

 The connective tissues. Elastic cartilage and fibro-cartilage. 



