Bui. 1037, U. S. Dept, of Agriculture. 
Plate ! I 
Examples of Wood Infection.—II. 
Fig. 1.—Artificially infected blocks of red oak and white oak in the tile chamber ready for the 
steaming experiments performed at the Madison laboratory. The large white areas of 
mycelium on the ends of the blocks in the upper four rows are wood-destroying fungi and 
probably developed as a result of infection in the log. Fig. 2.—Sawed felloes of oak (species 
not known). Note the abundant growth of mold which had developed in the material during 
shipment and while in storage. Photographed by H. D. Tiemann. 
