PUFFING IN THE DISCOMYCETES 263 



a view to its extension individual apothecia of a series of typical 

 species should be observed in the field. Such apothecia should be 

 left in situ and not be touched by man ; and, for each apothecium, 

 during the whole spore-discharge period, a continuous record, not 

 only of the times of spore-discharge, but also of the conditions 

 of spore-discharge (temperature, moisture, wind-movements, etc.) 

 should be made. 



