Zool— Vol. I.] EISEN—PLASMOCYTES. 6$ 



PLATE II. 



38^. The plasmocyte is almost ready to separate. The nucleus is in a far 

 advanced stage of decomposition. The centrosphere contains three very 

 distinct centrosomes; there is no somosphere. 



39. The plasmocyte is almost fully developed; there is a residue of cres- 

 cent-shaped granosphere at the pole; only part of the nucleus is indicated. 

 The plasmocyte contains two archosomes, one of which is imperfect, but 

 with a distinct centrosome. In the larger plasmocyte the granosphere is 

 dark violet; the centrosphere pale violet, with a dark somosphere. There are 

 parts of somosphere and centrosomes scattered along the edge of the cen- 

 trosphere, as is sometimes the case. The pale ring around the granosphere 

 is the hyalosphere. 



PLASMOCVTES. 



All these figures are shown with Oc. 4, excepting 46, 50, 51, 58 and 76. 

 The stain used for most of the figures was toluidine; Ehrlich-Biondi for 54, 

 62, 67, 78; eosin-methyl blue " O " for 48, 49, 59; and for figures 82, 83 and 84 

 Zeiss Apochrom. 



40. The granosphere is very long, and the hyalosphere is much wider 

 than is generallythe case. The pale violet, almond-shaped zone in the darker 

 granosphere is the centrosphere. The centrosomes and somosphere are not 

 segregated. The thin blue fringe along the margin is the plasmosphere. 



41. Showing a long, armlike, amoeboid projection. The hyalosphere is not 

 differentiated; the granosphere is deep violet; the centrosphere is round and 

 white, with a central centrosome. There is a small centrosome with centro- 

 sphere, but without granosphere, in the lower right margin. 



42. A plasmocyte, crescent-shaped, with two archosomes, but only one 

 granosphere. The inner spheres are not well differentiated. 



43. A starlike plasmocyte with poorly differentiated archosomes. It is 

 probable that these two figures, 42 and 43, as well as 78, represent plasmo- 

 cytes in degeneration, none of the spheres having properly responded to the 

 stains. 



44. A very perfect plasmocyte with well differentiated spheres. The grano- 

 sphere is dark violet and contains two archosomes, the upper one of which 

 is very small; the lower one is large, with a very large oval centrosphere, 

 which shows different layers of plasma; in the center is a square somosphere 

 with four centrosomes. 



45. A large, starlike plasmocyte, with a dark, round granosphere. The 

 centrosphere, which is differentiated and irregular, is seen at the lower mar- 

 gin; it contains blotches of somosphere and a round, ringlike centrosome. 



46. A starlike plasmocyte with dark and narrow granosphere. The large, 

 paler, inner zone is the centrosphere, and the innermost darker zone is the 

 somosphere with centrosomes. 



47. A very perfect plasmocyte, with a narrow rim of violet granosphere. 

 The centrosphere is very large, stained pale blue. The inner somosphere is 

 pale whitish, with a few, small centrosomes in the center. 



48. This is a somewhat abnormal, but well differentiated plasmocyte. 

 Eosin-methyl blue " O." The hyalosphere is pure white. The large, pale 

 pink zone is of doubtful character, possibly only part of the hyalosphere. In 



