GENERAL ORGANIZATION 



777 



Rhinosporidium seeberi (Wernicke, 1903). — This organism was first 

 seen by Seeber (1900) in a nasal polyp in South America (Figs. 335, 336). 

 As pointed out by Ashworth (1923), it was referred to by Belou (1903) as 





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Fig. 336. — Stages in the Development of Bhmosporidium seeberi from Xasal 

 Polyp of Man. (After Ashworth, from Trans. Boy. Soc, Eclin., liii., 1923.) 



1. Very early stage 6 /< in diameter lying between connective tissue cells ( x 1,600). 



2. Later stage 65 /t in dianu-ter witli single nucleus ( x 400). 

 .3. Section of later stage with si.\ty-four nuclei ( x 400). 



4. Section of stage with aliovit ."ioo nuclei. The envelope is composed of a thin chitinous external 



layer and a thick inner celluluse layer. The position of the future pore is indicated by a 

 depression in the celhilDsc layer ( ■ 400). 



5. Section of stage in which the contents of sporangium has subdivided into about 4,000 nucleated 



cells ( x 800). 6. Discharge of mature spores through pore of sporangium ( x 200). 



7. Section of a spore (10 x 7 /()> showing nucleus with karyosome and cytoplasm containing 

 vacuoles, three of which include refrin<j;ent spherules. 



Coccidium seeberia Wernicke, 1900. Minchin and Fantham (1905) named 

 it R. kinealyi, but undoubtedly Wernicke's name, R. seeberi, has priority, 

 as pointed out by Hartmann (1921). Minchin and Fantham regarded the 



