Bui. 1053, U. S. Dept. of Agriculture. 



PLATE VI. 



Fig. I. — Dissemination of Basidiospores of Trametes Serialis by 

 Imperceptible Currents of Air in a Closed Pit. 



The sporophore at A naturally dropped spores downward, but in the closed pit there were air 

 currents of sufficient magnitude to carry the spores upward to be deposited at points marked 

 B. (X-|.) 



Fig. 2. — Dissemination of Trametes Serialis. 



Basidiospores of Trametes serialis on the leg of a sow bug caught in condensation water beneath 

 the sporophore in fungus pit at Madison, Wis. (X 250.) 



