viii CONTENTS. 



PAGE 



17. Serum-albumin : its characters 19 



18. The circumstances which affect the rapidity of clotting ... 20 



19. The preparation of plasmine and fibrinogen 



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 the living blood vessels . . 27 



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



SECTION II. 

 THE CORPUSCLES OF THE BLOOD. 



The Red 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 enumeration 34 



26. The destruction of red corpuscles 35 



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



hsematoblasts 36 



The White Corpuscles. 



28. The structure of the white corpuscles ; characters of the cell-substance 38 



29. The chemical bodies present in white corpuscles 40 



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

 and anabolic changes. The nature and relations of the ' granules ; ' 



living substance, food and waste 41 



31. The origin of the white corpuscles. Leucocytes 44 



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



plasma. Different kinds of white corpuscles . . . . - 45 



Blood Platelets. 

 33. The characters of blood platelets 48 



SECTION III. 



THE CHEMICAL COMPOSITION OF BLOOD. 



34. General chemical characters 50 



35. Chemical composition of serum 50 



36. Chemical composition of red corpuscles 51 



37. Chemical composition of white corpuscles 52 



