442 SELLING LUMBER 



Owing to the confusion which frequently results in the 

 proper classifying of timbers into longleaf, shortleaf, lob- 

 lolly, etc., a new rule has been devised and recently adopted 

 by the American Society for Testing Materials, and known 

 among the trade as the "Density Rule," which classifies all South- 

 ern Pine timbers, irrespective of botanical species, into two 

 classes ; namely, "Dense Southern Yellow Pine" and "Sound 

 Southern Yellow Pine." 



Details and description of these designations will be found 

 in the following pages. 



The Southern Pine Association recommends that all tim- 

 bers be branded. All manufacturers and dealers are invited 

 to brand their timber in accordance with the grades and classi- 

 fications contained in this book. 



SOUTHERN PINE ASSOCIATION. 

 New Orleans, Louisiana, U. S. A., March 15, 1916. 



DEFINITION FOR SOUTHERN YELLOW PINE. 



(Adopted and Copyrighted by the American Society for Test- 

 ing Materials, August, 1915.) 



SOUTHERN YELLOW PINE. This term includes the 

 species of yellow pine growing in the Southern States from 

 Virginia to Texas, that is, the pines hitherto known as longleaf 

 pine (Pinus palustris), shortleaf pine (Pinus echinata), loblolly 

 pine (Pinus t&eda), Cuban pine (Pinus heterophylla) and pond 

 pine (Pinus serotina). 



Under this heading two classes of timber are designated: 

 (a) Dense Southern Yellow Pine and (b) sound Southern Yel- 

 low Pine. It is understood that these two terms are descrip- 

 tive of quality rather than of botanical species. 



(a) Dense Southern Yellow Pine shall show on either end 

 an average of at least six annual rings per inch and at least 

 one-third summer wood, or else the greater number of the rings 

 shall show at least one-third summer wood, all as measured 

 over the third, fourth and fifth inches of a radial line from the 

 pith. Wide-ringed material excluded by this rule will be ac- 

 ceptable, provided that the amount of summer wood as above 

 measured shall be at least one-half. 



