XXVI LIST OF ILLUSTRATIONS 



FIG. PAGE. 



8. The same field as 7. The leucocyte is retracting its pseudopodia. 47 



9. The same field as 7 and 8. The retraction of pseudopodia is nearly 



complete. The lobes of the nucleus of the leucocyte are turning 



a faint blue colour 47 



10. A leucocyte excited by atropine. Its granules are deeply stained, 



and its nucleus is also beginning to stain a blue colour. Low 

 power 49 



11. A leucocyte which has just been killed by the staining of its nucleus. 



Its granules are also deeply stained 49 



12. The leucocyte has just died owing to the staining of its nucleus. 



The cell-wall is beginning to bulge because the cytoplasm is 

 liquefying 53 



13. The onset of achromasia. The same field as 12. The stain is 



beginning to fade from the nucleus. The bulging of the cell- 

 wall has become general 53 



14. Achromasia. The same field as 13. The stain has gone from the 



nucleus, although the granules are still stained. Note that the 

 red cell is disappearing 57 



15. Achromasia. The same field as 14. Many of the cell-granules 



have lost their stain. The cell-wall is nearly invisible. The 

 red cell has disappeared 57 



16. A stained leucocyte. The ordinary vacuoles (colourless patches 



amongst the cell granules) are well shown. The cell has just 

 died 105 



17. Diffusion-vacuoles in a leucocyte 105 



18. A dead leucocyte in which diffusion-vacuoles are beginning to 



appear 109 



19. A diffusion-vacuole in a lymphocyte. Low power 109 



20. A diffusion-vacuole in a granular red cell 115 



21. A clump of normal blood-platelets. They are resting on a jelly 



which will just stain their granules 115 



22. Diffusion-vacuoles in blood-platelets. The cells are resting on the 



same jelly-film as those in 21, but they had been subjected to 

 the action of morphine hydrochloride 119 



23. Diffusion-vacuoles in blood-platelets. The jelly-film had the 



same index of diffusion as that employed in 21 119 



24. A specimen of blood which had been mixed with morphia solution. 



Note the extreme vacuolation of the leucocyte. A blood- 

 platelet is also vacuolated. The same jelly as in 21 121 



25. Patches resembling archoplasm induced in a leucocyte by sub- 



jecting the blood to an extract of a dead tissue. The jelly-film 



on which the cells are resting is similar to that employed in 21 . 121 



26. An extruded pseudopodium becoming detached from a leucocyte 



which is excited by atropine. No stain 125 



27. Amosboid movements excited in a blood-platelet by the action of 



atropine . 125 



