276 



MICROBES, FERMENTS, AND MOULDS. 



nature of the spores on the fructiferous hypha. In 

 other words, the characters which have been hitherto 

 considered as proper to the three genera, Aspergillus, 

 Mucor, and PenicUlium, themselves types of three 

 very distinct families, are found either simultaneously, 



Fig. 107. ^The penicillium ferment (Cocardas). Aerial fructification in extract of 



liquorice : tlie three forms, Mucor (1), PenkiUiwm (2), AsjiergiMus (3;, borne by 

 a single hypha A (x 225 diam.). 



or successively, on the same hypha, and are only 

 varied forms of a highly polymorphic species, the 

 penicillium ferment (Cocardas). 



Fig. 107 represents the three forms of fructifica- 



