TIMBER STORAGE IN THE EASTERN AND SOUTHERN STATES. 13 
the air to infect whatever sound lumber may be in the vicinity. The 
writer has seen scores of instances where small piles of rotting debris 
have been scattered about lumberyards and even at times piled di- 
rectly against sound lumber (fig. 10). Very frequently this debris 
consists of old ties (fig. 11) or timbers from the tramway platforms. 
In other cases it may be }^ard stock which has rotted in storage and 
has been left in situ or carted a few rods and discarded just beyond 
the confines of the yard. One such mill yard was visited where 
several hundred 
thousand feet of pine 
and hardwood lum- 
ber had been thrown 
into an adjoining rice 
swamp in close prox- 
imity to and extend- 
ing for nearly a mile 
along a row of lum- 
ber stacks (see fig. 9). 
In this same yard it 
was also commonly 
noted that sound 
lumber fresh from 
the saw was piled 
upon the bases of old 
lumber piles which 
were thoroughly rot- 
ted (fig. 12). 
Also in this yard, 
as well as in a yard 
in Mississippi, vines 
were allowed to grow 
up over some of the 
lumber piles (fig. 13). 
This is, of course, 
highly objectionable, 
since such vegetation tends to collect moisture and impedes venti- 
lation. 
Such conditions as these are bound to be a serious menace to the 
effective storage of lumber. 
Fig 
P74F 
9. — Pine and hardwood lumber which has rotted in 
storage in the yard shown in figure 11. Instead of burn- 
ing the debris it was thrown into an adjoining rice 
swamp. Fungi developing on this debris will again 
infect the sound lumber. 
TRAMWAYS AND RAILWAYS. 
Practically all sawmills have a more or less extensive tramway or 
railway system for the distribution of lumber from the mill to the 
yard and other units of the plant (fig. 14). It is quite the uni- 
versal condition that these structures harbor multitudes of various 
