TIMBER OP THE UNITED STATES AND CANADA 71 



After open-air seasoning for about three months, and 

 taking the average over 300 fair-sized logs, the weight of 

 pitch-pine worked out at 45'8 Ibs. per cubic foot; the 

 minimum was 35'5 and the maximum 54'6. The percentages 

 of weights were as follows : 



5 per cent, under 40 Ibs. per cubic foot. 

 27 between 40 and 45 Ibs. per cubic foot. 

 54 45 50 



14 50 55 



The average weight is rather less than it was twenty 

 years ago. 



Shortleaf Pine (P. echinata), also called slash pine, 

 Carolina pine, yellow pine, etc., resembles loblolly ; it is 

 the common tree of Missouri and Arkansas, and is found 

 in all the southern States ; it attains a height of 40 to 

 80 ft., and as a timber it ranks next to longleaf pine, 

 although as regards strength it is slightly weaker than 

 either of the other southern pines. 



Weight about 39 Ibs. per cubic foot. 



In appearance the longleaf and shortleaf pine trees, 

 particularly the latter, very much resemble the Scotch or 

 Northern pine. 



Loblolly Pine (P. tceda) is a large tree which forms exten- 

 sive forests in the southern States from Virginia and 

 South Carolina right round to Texas. The timber is wider 

 ringed, coarser, lighter, softer, and contains much more sap 

 than the longleaf pine ; as a rule the larger portion of the 

 tree is sap, but the two timbers are sometimes mistaken 

 for one another. One occasionally comes across a log of 

 loblolly even amongst a lot of good pitch pine, but it can 

 generally be detected by its much wider rings, greater 



