TIMBEE STOKAGE IN" THE EASTERN AND SOUTHERN STATES. 21 
This question of the sanitary handling of the piling sticks is of 
very great significance, particularly in regions of high humidity, 
where every precau- 
tion must be taken 
to safeguard stored 
lumber. Plate III, 
figures 5 and 6, shows 
such infected sticks 
found in Florida 
and Tennessee lum- 
beryards, where sev- 
eral species of wood- 
destroying fungi 
were frequently 
noted in the piles. 
When one keeps in 
mind the fact that 
the soil in and about 
lumberyards often 
becomes, in the 
course of time, thor- 
oughly intermixed 
with sawdust and 
partially decomposed woody matter which offers a fertile field for the 
development of wood-destroying fungi, the necessity of keeping all 
sound material out 
of contact with it be- 
comes verv- evident. 
In cases where saw- 
dust and bark or 
wood debris are used 
to produce artificial 
fills the danger is 
further increased. 
Such filling mate- 
rials are not infre- 
quently used. 
Such situations in- 
troduce the further 
question as to what 
material should be 
used for filling in 
low portions of the yards. While the material used will necessarily 
be governed largely by local conditions, it is the opinion of the writer 
Fig. 18. — Pile foundations consisting of creosoted timbers 
resting on concrete piers in use at the Forest Products 
Laboratory, Madison, Wis. This is a yery satisfactory 
type of foundation. 
Fig. 19. — Concrete foundations with untreated skid tim- 
bers in general use in a mill yard at Laurel, Miss. Only 
two rows of piers are used for stock 14 feet or less in 
length. 
