PLATE XIV 





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iSil 



Dl PHTH EK 



1. Coccal form showing metachromatic granules. 



."i. Change from coccal to rod form. 



0. Old culture. Barred iuvolution forms. 



2. Typical beaded rod^. 



4. Change more pronounced. Some rods show polar bodies. 



6. Siill older culture with swollen and involution forms. 



X 1000 diam. 



