370 Forestry Quarterly. 



live borers at their centers when sawed. Logs would have to 

 remain in the pond until they were thoroughly soaked out, per- 

 haps a week or more, rendering the process slow, and perhaps 

 not possible for any large amount of timber. 



If a systematic attempt were made to apply this method, it 

 might be well to experiment with poisonous solutions in the 

 water, such as copper sulphate or mercuric chloride. These 

 might shorten the time necessary for immersion, and would tend 

 to prevent reinfestation, or fungus attacks. 



Uses for Infested Material A lumberman frequently finds 

 himself in possession of an amount of infested timber, which he 

 does not wish to lose. What can he do with it? 



It may of course be manufactured into common lumber and 

 sold for what it will bring as number three common and cull. 

 Or perhaps it may be disposed of as firewood. The demand for 

 both of these is small, and no large amount of either can be 

 marketed at one time, moreover the profit is small. For it costs 

 as much to handle burned as green timber, and the price on the 

 finished product is from a third to a half lower, in addition to 

 a greater waste in manufacture. 



Railroad ties are sometimes sawed from fire-killed timber, but 

 are not very satisfactory. However, if they could be treated with 

 a timber preservative, they would be more valuable in many cases 

 than green ties. While the larger railroads in the Black Hills 

 have treating plants, they draw their timber supplies mostly from 

 elsewhere. The establishment of a commercial treating plant 

 in the Black Hills would solve many of their problems of wood 

 utilization. 



The use of untreated infested material for mine timbers is not 

 usually advisable, since the moist conditions prevailing in most 

 mines allow the continued existence of both insects and fungi, 

 which speedily destroy the timbers, necessitating frequent re- 

 newals. 



A certain lumberman in the Black Hills has solved for himself 

 the problem of the use of fire-killed and infested timber, by turn- 

 ing it into box boards. There is a large and steady demand 

 throughout the Middle West for them by the large meat packing 

 companies. He has no difficulty in disposing of any fire-killed 

 material, no matter how much blued or infested, so long as it is 

 not affected with red-rot. 



