bulletins on forest pathology from bulletin usda washington dc 1913 1925 trees plant diseases bui 1037 u s dept of agriculture plate ii examples of wood infectionii pig 1artificially 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 2sawed felloes of oak species not known note the abundant growth of mold rg8t12.jpg from usdéñÃÂ¥www tgbot oneid4ydz4 View Photo