are Ady 28 uy 
oe Rate’ dy a,A"S 
} By Y me NN ye 
AAP? 
PLATE XXIV. 
Fig. 1.-— Photomicrograph of a transverse section of 
yellow birch (Betula lutew) wood showing the final stage 
of the decay, X 15. 
Fig. 2-— Photomicrograph of a transverse section of 
bitternut hickory (Hicoria minima) wood showing the final 
stage of the decay, X 15. 
