Bui. 1298. U. S. Dept. of Agriculture 
Plate V 
Fig. 1.— Ranked piles of 8-foot spruce. This type of massed piling, without adequate ven- 
tilation at the sides and beneath the ranks, leads to serious decay in a comparatively short 
time 
Fig. 2— Piles 35 feet high of 8-foot jack pine and spruce. Note the orderly arrangement and 
clean yard, conditions which are all too rare in the pulp industry 
Fig. 3.— Bark and fragments of rotten wood which have been shaken down from the conveyor. 
Such detritus readily absorbs and holds moisture from rains and, in the case of any but 
water-soaked wood, promotes decay. 
Fig. 4.— Bark and rotten wood at the base of a pile of 2-foot spruce and balsam stored for about 
one and one-half years. New rossed wood has been piled on this old, thoroughly infected 
base. Considerable loss from decay in the new wood may be expected from this source. 
Before starting new piles the old wood should be utilized and the surface of the ground cleared 
of all infecting material 
