LOBLOLLY OR NORTH CAROLINA PINE. 



55 



n;it('(l MS the Portsmouth soil series of the Bureau of Soils of the U. S. 

 I ifpartment of Agriculture) in which the water table seldom sinks 

 more than 12 feet below the surface during the growing season, yet 

 which on account of surface drainage or porosity are never flooded for 

 ed periods; alluvial lands, particularly those with loamy soils 



low this average. The wide limits of such variations are shown below in a list of stands of different 

 ages, which wen 1 referred to Quality II. A (*) indicates stands which seemed to be under-stocked; a (t) 

 stands which seemed to be excessively crowded; stands which have been thinned are indicated by 

 (t). Basal area refers to ths area of thff cross section (inside or outside of bark) at breasthigh of 

 all trees on an acre. 



QUALITY II STANDS, SHOWING RANOE OP VARIATION IN AVERAGE DIAMETER, IN VOLUME, BASAL 

 AREA AND NUMBER OF TREES PER ACRE. 



The relation of number of trees, and average diameter to yield in board feet is shown by a com- 

 parison of the two 22-year old stands and the 60 and 62 year old stands. Some of the stands given as 

 Quality II approach Quality I, others approach Quality III. The second 38-year old stand closely 

 approaches Quality III. The 80-year old stands approach Quality 1. 



