viii CONTENTS. 



PAG* 



19. The preparation of plasmine and fibrinogen 22 



20. Fibrin-ferment : its action. Nature of the process of clotting . . 23 



21. Why blood clots when shed 26 



22. The influence on clotting exerted by tne living blood vessels . . 27 



23. The nature of this influence ; the action of the white corpuscles . . 29 



SECTION IL 

 THE CORPUSCLES OF THE BLOOD. 



The Bed Corpuscles. 



24. The structure of the red corpuscles ; laky blood ; stroma, and haemo- 

 globin . 31 



25. The number of red corpuscles in human blood ; method of enumer- 

 ation 33 



26. The destruction of red corpuscles . . 34 



27. The formation of red corpuscles in the embryo and in the adult ; 



hsematoblasts 35 



The IVhite Corpuscles. 



28. The structure of the white corpuscles ; characters of the cell-substance 36 



29. The chemical bodies present in white corpuscles 37 



30. The white corpuscles as a type of living matter; metabolism, kata- 

 bolic and anabolic changes. The nature and relations of the 



' granules ' ; living substance, food and waste 39 



31. The origin of the white corpuscles. Leucocytes 42 



32. The disappearance of the white corpuscles. Their influence on the 



plasma. -Different kinds of white corpuscles 43 



Blood Platelets. 

 33. The characters of blood platelets . . . . * . . . .44 



SECTION IIL 

 THE CHEMICAL COMPOSITION OF BLOOD. 



34. General chemical characters 46 



35. Chemical composition of serum 46 



36. Chemical composition of red corpuscles 47 



37. Chemical composition of white corpuscles 48 



SECTION IV. 

 THE QUANTITY OF BLOOD AND ITS DISTRIBUTION IN THE BOOT. 



38. The determination of the quantity of blood in the body, and the- main 



facts of its distribution . 49 



