662 EISEN. 



which are in each group. The two round, pale bodies are probably food, or 

 secreted, granules of a highly refractive nature. The central paler body is per- 

 haps the centrosphere. In b the large body is the granule, also a single centro- 

 some in a centrosphere. c possesses a single centrosome, and d two groups of 

 centrosomes, one of which is less defined. The plasmocyte (a) has a diameter 

 about one-half that of a red corpuscle. 



Fig. 10. A plasmocyte with three centrosomes placed inside the granule. 



Fig. II. A plasmocyte with two refractive granules and three free centro- 

 somes in a group. The fourth centrosome is surrounded by a centrosphere. 



Fig. 1 2. A large plasmocyte which appears as if in division. The large white 

 fields are refractive granules. The centrosomes are surrounded by a centrosphere. 



Fig. 13. One of the largest plasmocytes observed in human blood. Its 

 diameter equals about two-thirds that of a red blood-corpuscle. There are three 

 groups, each with several centrosomes and a granule. The very large, paler field 

 is probably a centrosphere, in the center of which is a somosphere with a single 

 centrosome. There are two smaller plasmocytes, possibly offshoots of the same 

 group. 



Fig. 14. A plasmocyte with two granules and a centrosphere with a single 

 centrosome. 



Fig. 15. A plasmocyte with a large granule and a centrosome and centro- 

 sphere lying independently in the granosphere. 



Fig. 1 5. A plasmocyte similar to the former, but with a group containing 

 three centrosomes. 



Fig. 17. A plasmocyte with a very large, highly refractive granule, surrounded 

 by three darkly stained centrosomes, which again are surrounded by a grano- 

 sphere. 



Fig. iS. a large plasmocyte similarly organized to the last one. The centro- 

 somes appear to be connected by a somosphere. The large granulated red area 

 is the granosphere. This, as well as the last plasmocyte, is from a sUde stained 

 with eosin-haemalum, which stain has brought out more definitely the cytoplasmic 

 filaments. 



Fig. ig. A plasmocyte with a large lower refractive granule, an upper centro- 

 sphere, and two centrally situated centrosomes. 



Fig. 20. A plasmocyte with true, distinct centrosomes and a large granule. 

 Whether the darker areas surrounding the centrosomes are to be explained as 

 somospheres is uncertain. 



Fig. 21. In this plasmocyte we have two large granules of a highly refractive 

 nature, with a single centrosome between them. 



