46i Scientific Proceedings, Royal Dublin Society. 



secondary conidia has been observed twenty-four days after the original 

 conidium was placed in water, and the resulting germ tubes lived at least ten 

 days longer. 



The conditions under which the continued existence of conidia, zoospores 

 and germ tubes in water was directly observed for periods exceeding, in 

 some cases, thirty days are believed to represent the conditions under which 

 existence is possible for comparatively long periods in the soil. 



LITEKATUEE CITED. 



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