412 



RESEARCHES ON FUNCxI 



Hs 



^ 



. t'aiFii>»i?r>»a' VII «wM-afciir<^ 



Fig. 175. — Culture of tlie non-luminous mycelium of Panus stypticus 

 physiological form non-lvminescetis. Spores obtained from fruit- 

 bodies gathered at Great Missenden, England, were sown on the 

 top of the sterilised block of Birch wood which rests on wet cotton 

 wool. The mycelium spreading over the block was entirely 

 non-luminous and had no efTect on a photographic plate. Photo- 



graphed by daylight 11-5 

 natural size. 



weeks after inoculation. About § the 



