SAP-STAIN, MOLD, AND DECAY IN GREEN WOOD. 
25 
on well-drained soil free from weeds and one which will allow the 
prevailing winds to blow through the sides rather than upon the ends 
of the stacks. 
Care should be taken to provide suitable foundations consisting of 
metal or well-seasoned heart stock, preferably creosoted and resting 
upon piers of creosoted wood or, better, of stone, brick, concrete, or 
metal. All foundations should be sufficiently high to allow for 
ventilation vertically through the stacks. Moreover, there should be 
ample space between 
the stacks to permit 
a free circulation of 
the air around them. 
Finally, it is impor- 
tant that narrow 
strips, perhaps 1 inch 
wide and at least 1 
inch thick, of well- 
seasoned, kiln-dried, 
or chemically treated 
wood be used between 
all courses and that 
they be carefully 
placed in vertical 
alignment to prevent 
warping of the 
stock. 16 
HANDLING AT THE MILL. 
EARLY MANUFACTURE. 
Logs, bolts, and 
Split billets should be Fig. 6. — Bolts piled in a box car. Note the debris on the 
sawed into dimension fl ° or ° f th * car ; . Bo ] ts ^ likely to .^ ^" om fu »» ou / 
attacks when shipped in box cars with the doors closed. 
stock or planks and 
manufactured as soon as possible. This will do much toward safe- 
guarding the material by reducing the time in storage. 
AIR SEASONING. 
Provided kilns are not available, the dimension stock should be 
seasoned from six months to a year or more, depending upon the 
16 The general sanitation of lumber yards and the proper methods to be observed in 
the piling of timber to prevent or reduce losses in storage due to fungi, together with a 
consideration of the more common rot-producing organisms, are clearly described by 
Humphrey (22), in Bulletin No. 510, United States Department of Agriculture. Copies 
may be obtained from the Superintendent of Documents, Government Printing Office, 
Washington, D. C, at 20 cents per copy. 
75579°— 22 i 
