12 WORKING PLAN, FOREST LANDS IN SOUTH CAROLINA. 
METHOD OF THE ESTIMATE. 
TABLES OF STAND. 
In order to arrive at an accurate basis for estimating the present | 
stand of timber in these blocks, valuation surveys were made. Strip 
acres 10 chains long and 1 chain wide were run on compass courses | 
through the blocks, and all trees standing upon these strips, including | 
pine down to 1 inch in diameter and Cypress and hardwoods down to | 
10 inches, were calipered, and their diameters recorded separately for | 
each acre surveyed. Six hundred and fifty-eight acres were thus | 
measured, distributed as follows: 
Block 1, 239 acres, or 5 per cent of the area. 
Block 2, 169 acres, or 3.8 per cent of the area. 
Block 3, 80 acres, or 4.1 per cent of the area. 
Block 4, 96 acres, or 3.3 per cent of the area. 
Block 5, 74 acres, or 1.8 per cent of the area. 
Tables 2 to 6 (pp. 15-19) were constructed from the valuation | 
surveys. They show for each block the average number of trees per | 
acre, by inch classes, of pine 1 inch and over in diameter, and of | 
Cypress and hardwoods 10 inches and over in diameter breasthigh, 
and the total number of trees. 
A summary of each table for all trees 12 inches and over in diameter 
breasthigh shows the average number of trees, the percentage of each 
species, and the average diameter of each species. In all the tables, 
Longleaf and Cuban Pines have been separated into boxed and 
unboxed trees. | 
These tables of stand are not strictly representative of forest types. 
It was found that the areas representing single types were often of 
small extent and of scattered distribution. On this account, and 
owing to the great variation within the same type, due to the past 
management of the forests, it was thought advisable to run the strip 
acres on compass courses rather than to attempt to follow a rigid 
division upon type lines. The name given a table is, however, indica- 
tive of the forest type which predominates upon the lands included 
within the block to which the table applies. 
Tables 2, 3, and 4 were compiled from acre measurements the 
majority of which were made on pine land. ‘Tables 5 and 6 were 
based on acre measurements made largely in swamp and Loblolly 
Pine forest, respectively. 
Block 1. Boxed pine land.—The bulk of the forest in Block 1 is pure 
Longleaf Pine. A small stand of swamp trees is found along the 
streams and in the cypress ponds. Cuban, Loblolly, and Pond Pines 
border the swamps and occur on low flats of varying size. The aver- 
age number of pine trees of all diameters per acre, omitting dead 
pine, is 88.16, of which 58.30, or over 66 per cent, are Longleaf Pine. 



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