The Diagnosis of Decay in Wood PLATE 3 
l—T ransverse section of southern yellow pine wood infected with Trametes pini showing the 
characteristic invasion or incipient rot area preceding the typical rot containing pockets (about 
natural size). 
L—Transverse section of a log of Tsuga canadensis infected with Qanoderma tsugae showing the 
dark “water soak” appearance of the incipient stage of the rot. Photographed without color 
screen, soon after cutting (about y h natural size). 
