6 CONTENTS. 



Page. 



Polijporus suhacidus Peck 44 



Occurrence - 44 



Structure of diseased wood 45 



Fruiting organ 48 



Eemedies 49 



Other diseases 49 



Polyporus vaporarius (Pers. ) Fr 49 



Polyporus aiwosus Fr 49 



Agaricus melleus Yahl 50 



Conclusion 51 



Explanation of plates 53 



