72 CALIFORNIA ACADEMY OF SCIENCES. [3D Ser., 



76. A plasmocyte observed in 0.6 per cent, salt solution, showing amoeboid 

 projections of cytoplasm. 



77. In this interesting plasmocyte the granosphere is divided by the bar- 

 like centrosphere. Along the edge of the latter is seen on either side a 

 somosphere, each with two centrosomes. 



78. A plasmocyte in a very advanced stage of disintegration. 



79. A plasmocyte showing phagocytosis. In the granosphere we see to 

 the left two archosomes, each with three centrosomes connected by a narrow 

 zone of somosphere. In the center of the granosphere is seen a small ery- 

 throcyte partly involved by granospheroplasm. In the erythrocyte is seen a 

 large, round disk, a parasitic Plasmodium, Hcemapium riedyi, common in the 

 blood of Batrachoseps, the life-history of which I expect to publish soon. 



80 and 81. Two plasmocytes with very refractive food globules in the somo- 

 sphere. The centrosome and somosphere, when visible, are always situated 

 close to the margin, never in its central mass. In this plasmocyte the centro- 

 sphere is the oblong, blue zone. Zeiss Apochrom. 3 mm., Oc. 8. 



82. A large plasmocyte with three separate amceboid centrospheres. Two 

 of these possess a single somosphere with centrosomes, while the middle 

 centrosphere possesses two separate somospheres. One of the somospheres 

 is crescent-shaped and the centrosomes are in the budding stage. Zeiss 

 Apochrom. 3 mm., Oc. 8. 



83. A large plasmocyte with amceboid centrospheres and ring-shaped 

 somosphere. In the latter are seen three budding centrosomes connected by 

 a thin rod of centrosomal matter. The substance enclosed by the grano- 

 spheral ring is more refractive and probably composed of food supply which 

 is being digested by the somosphere. Zeiss Apochrom. 3 mm., Oc. 12. 



84. This is possibly a degenerating, intensely staining form of plasmo- 

 cyte. The two outer spheres are almost disintegrated, while the granosphere 

 is strongly and globularly granulated, staining intensely. There are three 

 somospheres, one with budding centrosomes. 



STAINS. 



Eosin. James W. Queen & Co., Philadelphia, U. S. A. Already mixed and 

 in solution. Composition unknown. 



Thionin. Actien-Gessellschaft f. Anilin-Fabrikation. Berlin (66,711). 1 per 

 cent, watery solution, with 10 per cent, alcohol. 



Toluidine, Blue extra. Actien-Gesellschaft f. Anilin-Fabrikation. Berlin 

 (66,711). 1 per cent, watery solution, 10 per cent, alcohol. 



Ehrlich-Biondi. From C. C. Riedy, San Francisco. Rubin S. (No. 243); 

 Methyl-Griin-Kryst (No. 99); Orange G. (3884); all from Actien- 

 Gesellschaft f. Anilin-Fabrikation. Berlin (38,242). Solution acid- 

 ified with oxalic acid. 



Methylene Blue "O, " Patent. Badische Anilin and Soda- Fabrik. Lud- 

 wigshafen, Germany (9038). 1 per cent, watery solution, alcohol 

 10 per cent. 



All the stains were supplied by C. C. Riedy, San Francisco. The numbers 

 in parenthesis refer to manufacturer's order number. 



