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MICRO-ORGANISMS AND FERMENTATION. 



coil round each other (B, upper half) ; one part of this spiral 

 throws out short, thick tubes (C), whilst the hyphal thread 

 carrying the spiral develops numerous fine branches, which 

 envelop it and form a covering (D), consisting of a dense 

 inner and a felted outer layer ; the inner cells are gradually 

 coloured yellow, and the loose outer cells are cast off. In 



Fiji. 33. Penicillium glaucum (after Brefeld and Zopf). A, Conidiophore ; B, organs of 

 generation ; C, first development of the sclerotium (a, asms-forming hyphae ; b, sterile filaments) ; 

 D, very young sclerotium in section (a, ascus-forming hyphse ; b, sterile portion of the sclerotium ; 

 m, mycelium); E and F, ascus-forming hyphse; (a) with young asci () and sterile mycelium 

 threads (m) from a more developed sclerotium; G, group of asci with spores; H, spore; /, 

 germinating spores ; K, young mycelium (with spore at x). A- E (below), germination of a 

 conidium, after Zopf (more highly magnified) : A, couidium before germination ; B, it has thrown 

 out a germ tube ; C, three germ tubes have been formed ; D, each germ tube shows towards the 

 spore a transverse septum () ; E, each germ tube has become divided by another septum (') into 

 a terminal cell (e) and an inner cell (6). 



