334 



SELLING LUMBER 



Work for 

 the Retailer's 

 Benefit 



The Origin 

 of Standard 

 Grades 



cuts, booklets, plans, pamphlets, folders, form letters, etc., but it is 

 buying space in the highest priced publications in the country and 

 through them teaching consumers in his territory the intelligent 

 use of Southern Yellow Pine, suggesting new uses for lumber, 

 stimulating business sending trade to his yard. Southern Pine 

 Association chemists are studying wood preservation, fire retard- 

 ents, the fungi, and insects destructive to wood, for his benefit. 

 Southern Pine Association engineers are testing southern Pine 

 under all conditions of service and establishing accurate 

 grading formulas to his advantage. Southern Yellow Pine archi- 

 tects are drawing plans for homes, farm buildings wood struc- 

 tures of every description for his use and profit. Representa- 

 tives of the Southern Pine Association are fighting anti-shingle 

 legislation, participating in city paving campaigns, distributing 

 literature at county fairs, conducting exhibitions at builders' con- 

 ventions all to the end that the retail dealer's business shall be 

 protected and increased. 



These things should be impressed upon every retail lumber 

 dealer in this country and you gentlemen certainly will find it to 

 your advantage to hammer in that impression, to talk Association 

 service to your trade insistently. That will be possible, however, 

 only in case you are yourselves familiar with just what this Asso- 

 ciation co-operative service is. 



The Density Rule 



By J. E. Jones 



Chief Inspector, Southern Pine Association 



New Orleans, La. 



The subject of this paper is the so-called "Density Rule," 

 but that my position may be readily understood, will say that T 

 am not an engineer, therefore my remarks will be along the lines 

 of an inspector rather than that of an engineer. 



A rule for the inspection of Yellow Pine timbers for struc- 

 tural purposes where strength is the greatest factor has been a 

 long sought necessity. The standardization of the manufacture 

 and grading of Southern Yellow Pine originated about twenty 

 years ago in the Southern Lumber Manufacturers' Association, 



