SELLING LUMBER 



225 



As to how to use preserved wood, this will depend very ma- 

 terially on the purpose for which it is intended. Where wood is 

 to 1)e painted or where odors are objectionable, either zinc chloride 

 or mercuric chloride treated wood should be used, because after 

 such treated lumber is dry it can be worked or painted in any way 

 desired. Creosoted wood can be used immediately after treat- 

 ment, although it is usually better to allow it to dry for a few 

 weeks. Wherever possible, wood should be framed and cut to the 

 form in which it is to be used, because the longer service will be 

 obtained when the wood is not damaged or wounded after it has 

 once been treated. Creosoted wood is not poisonous, as has fre- 

 quently been stated, either to animals or men. It repels all forms of 

 fungi and is resistant to all types of insect attack. It is rat-proof, 

 and when used on the farm, horses and cattle not only will let it 

 alone, but it also adds in a most material manner to the sanitary 

 condition in places where animals are kept. For special uses 

 special directions will be found necessary. This is, for instance, 

 typified by the use of Southern yellow pine in connection with 

 paving blocks. It is not only of the utmost importance that a 

 good class of yellow pine be, used for the manufacture of paving 

 blocks, but it is even more important to see that the blocks are 

 properly treated by the correct method, and that after treatment 

 they are laid upon a proper concrete foundation, with the neces- 

 sary expansion joints and fillers, as prescribed by the best standard 

 city specifications. 



Zinc chloride treated wood will not have the length of life 

 that creosoted wood will, because zinc chloride is soluble in water 

 and unless protected will in time leach out. In view of the fact 

 that it is a cheaper process, however, numerous uses will doubtless 

 be found. So, for instance, if properly painted it will have none 

 of the possible objectionable features as to color or odor which the 

 creosoted lumber will have, and will last a long time. 



The foregoing gives a very rapid survey of an industry which 

 will be found to grow in the coming years with the increasing 

 knowledge and appreciation of the public. It has necessarily been 

 impossible in this brief paper to more than touch the high spots 

 and to point out some of the fundamental points connected with 

 the manufacture and use of treated yellow pine. It should be re- 

 membered that the Southern Pine Association stands ready at all 

 times to give specific advice with reference to any one of the 

 points connected with the possible use of preserved yellow pine. 



How to 

 Use Pre- 

 served Wood 



Treating 

 Wood That 

 Is to Be 

 Painted 



The Study 

 of Wood 

 Preservation 

 a Duty. 



