i66 



GENERAL BIOLOGY OE MICRO-OHGAlSflSiaS 



Ciliates. — The second substem of the protozoa, Ciliophora, 

 is distinguished by the locomotive organs, numerous crlfi which 

 cover most of the body surface, and by the possession of two dis- 

 tinctly different nuclei, one apparently concerned with nutrition 

 of the cell and the other definitely associated in an impo_rtant man- 

 ner with the sexual reproduction. Multiplication takes place by 

 transverse division into two daughter cells or by budding. In.the 

 parasitic forms this may take place within a protecting wall (cyst) . 

 The sexual fertilization is 'not followed by any special kind of 

 division. Balantidium is the only genus of present interest as a 

 cause of human disease. See Balantidium coli, p. 454. 



Outline Classification of Micro-organisms 



iRhizopus 

 Mucor 

 Thamnidium 

 Oomycetes — Mildews 



Protista 

 (Microbes) 



Fungi 

 (Plants) 



Phycomycetes 



Ascomycetes 



Hyphomycetes 

 Fungi imperfecti 



Schizomycetes 

 (Bacteria) 



Aspergillus 



Penicillium 



Claviceps 



Saccharomyces 



Coccidioides 



Oidium 



Monilia 



Botrytis 



Sporotrichum 



Cryptococcus 



Trichobacteriaceae 

 Coccaceae 

 Bateriaceae 

 Spirillaceae 



Not classified— Filterable microbes 



Protozoa 

 (Animals) 



Plasmodroma 



Ciliophora 



Mastigophora 



Rhizopoda 



Sporozoa 



Ciliata 

 Suctoria 



