264 



REPORT OF THE 



No. 3 



Botanically, many new points of interest have been noted — such as the 

 characters of its spores, their viabiHty and method of germination, the remark- 

 able habit of vernal spore discharge, and the production of spores for three or 

 four years from the same pore layers. But the main interest here centers on 



1' ig. 3. Section of Trunk of living Yellow Birch showing decay in inner sapwood and heartwood 

 caused by the True Tinder Fungus. This section was kept for a few weeks under con- 

 ditions favorable to development of fungus on the affected cut surface. The surface 

 growth of the fungus darkened. 



the^relationship to its host. Regarding this feature, a general misconception 

 has existed, and one that directly concerns the application of the heartwood 

 to^some industrial purposes. Various manuals or bulletins, dealing with the 



