Bui. 510, U. S. Dept. of Agriculture. 
Plate II. 
Lumber Sanitation: Wood-Rotting Fungi.— II. 
Fig. 1. — Strands of mycelium of the "dry-rot*' fungus, Ifcrulius lachnjman$ ; on the face of pine planks 
in a lumber pile at Portland, Me. (the fungus has progressed to a height of six layers or more). Fig. 2. — 
The same fungus on the ground and in litter beneath an open storage shed, Philadelphia, Pa. 
Fig. 3. — Mycelium of a white Poria on the ground and on wood fragments beneath a cotton mill, 
Adams, Mass. Fig. 4.— Powdery deposit of spores cast by a mushroom over night (after Atkin- 
son). Fig. 5.— A species of Poria from a porch ceiling. Madison, Wis. Fig. 6.— Thin section of 
an encrusting fruit body of Mcrulius lachrymam, showing palisade lavcr of basidia bearing spores 
(after Falck). 
