SUMMARY. 23 



Other interesting structures are shown by the mycelium both macro-and 

 microscopic; of these we niay mention, the secondary fructifications (fig. 16 

 and 17). 



At the end of the article, the writer asks if, in addition to giving such 

 very interesting material for study, these pure cultures of toadstools might not 

 be put to some prattical advantage? 



She has separated the mycelium of the folio wing very good ediblemushrooms: 

 „Psalliota arvensis", the common mushroom which is more tasteful than the 

 «Psalliota campestris", ,,Marasmius oreades", the Fairyring toadstool; wMorchella 

 esculenta", the common morel and /,Boletus edulis" the summer Boletus. 



Would it be possible to cultivate these species in a wholesale manner, as 

 one has cultivated for so many years, the common mushroom „Psalliota carapestris" ? 

 Various people have tried to do so with other species, without however any 

 success. 



Nevertheless the author will try the experiment and Mr. Jan M. Hulsken at 

 Arnhem (wliose nursery of mushrooms is given in flg. 10) will co-operate 

 with her. 



