SAP-STAIN, MOLD, AND DECAY IN GREEN WOOD. 



51 



the kiln drying of the stock wherever possible and whenever the cost 

 will permit ; and in special cases steam treatment or the use of anti- 

 septic dips, followed by proper piling to insure ample ventilation. 



It must be continu- 

 ally borne in mind 

 that none of these is 

 by itself a sovereign 

 remedy. Preservative 

 dips or steam treat- 

 ment were not in 

 themselves, under the 

 emergency manufac- 

 turing conditions in- 

 cident to the war, by 

 any means sufficient 

 to control molding of 

 green stock when close 

 piled in storage ware- 

 houses or while in 

 transit in box cars. 



In connection with this investigation, it should also be borne in 

 mind that we are dealing with three distinct groups of fungi, namely, 

 the molds, staining organisms, and true wood-destroying organisms, 

 the antiseptics being more efficient against the last two groups than 



the first. As far as 

 is known, neither 

 molds nor staining 

 fungi cause any ap- 

 preciable diminution 

 in the strength of 

 timber and hence are 



Fig. 26. — Zigzag method of piling rim strips in box cars. unimportant in ve- 

 hicle manufacture from the standpoint of strength and probably 

 durability. The staining fungi can be controlled to a certain extent 

 by the intelligent use of antiseptics and possibly by steaming, and 

 it seems reasonable, in the light of experience, to suppose that the 

 development of wood-destroying fungi can also be prevented. 



Fig. 25. — A box car loaded with spokes and ready for shijv 

 ment. Spaces of IJ inches are left between adjacent 

 boards nailed across the doorways to allow for venti- 

 lation of the stock while in transit. 



