20 



POSITION— RELA T ION SHIPS 



Some few bacteria, approximately 13 to 14 per cent of 

 all, form spores, but the function of these spores (Chapter II) 

 is markedly different from that of yeasts or mold spores. 

 Bacterial spores are not primarily reproductive, but they 

 correspond more nearly to the ejicystment of many protozoa. 



Fig. 



7. — Spherical bacteria. 

 eral pairs are shown. 



Sev- 



FiG. 9. — Schizosaccharomyces. 

 Yeast-like cells, bacteria-like cells, 

 transverse division are all shown. 



Fig. 8. 



-Yeast cells. Some show 

 typical budding. 



Fig. 10.— a portion of the my- 

 celium of a mold. Note the large 

 size and the branching. 



Fig. 11. 



•Mucor type of mold showing "special fruiting organs." X 100. 

 a, sporangiophore; 6, sporangium; c, free spores. 



