36 WORKING PLAN, LANDS IN BERKELEY COUNTY, S. C. 
TaBLE XIV.—Clear length and total height of loblolly pine. 
: | : | : 
Diameter Diameter Diameter 
Clear - Clear = Clear <s 
breast- “e Height. || breast- Height. breast- Height. 
high. length. high. length. high. length. 
| 
Inches. Feet. Feét. || Inches. Feet. Feet. || Inches. | Feet. Feet. 
6 Oral Ngee Reem 10 || 11 33 65 || 21 58 103 
2 13 15 || 12 38 70 22 58 105 
3 15 21 || 13 43 75 23 58 108 
4 16 al 14 47 79 24 59 110 
5 17 32 || 15 50 84 25 59 112 
6 19 38 16 52 87 26 60 114 
7 20 43 17 54 91 27 60 116 
8 22 49 || 18 55 94 | 28 60 118 
9 25 54 19 56 97 29 61 120 
10 28 | 59 | 20) | 57 100 | 30 61 121 
| 
PERIODIC DIAMETER AND VOLUME INCREMENT. 
Table XV shows the growth in diameter breasthigh and in volume 
at different periods in the life of a tree, and the number of years 
required to grow 1 inch in diameter: 
TaBLeE X V.—Rate of growth of loblolly pine. 
Time requir- ee Seas 
aye Ee ed to grow eras 
Periodic ee . : 1inch in 
: diameter | Periodic | inch in diameter 
Period. : olume diam eter Age. reas 
breasthigh : breasthigh— 
growth. breasthigh S 
growth. during average ie 
F total age o 
period. eae 
vets. Inches. | Board feet. Years. Years Years. 
— BE ieee ces. 3 3 
en 3.3 74 3 30 3 
50-60 22 03 |f 4K 50 3 
60-70 1.8 82 6 60 3 
70-80 6 [oo ee. \ { 70 4 
| 80 4 
LONGLEAF PINE. 
LOCAL DISTRIBUTION AND OCCURRENCE. 
Longleaf pine is much more restricted in its occurrence than is lob- 
lolly. It is purely a tree of the higher, lighter, better-drained areas, 
and is rarely found where much moisture is present for any length of 
time. It occurs both in pure stands and in mixture, and thrives in 
either case. 
ASSOCIATED SPECIES. 
Over large areas longleaf pine occurs in nearly pure stands, though 
a scattering of single loblolly trees is nearly always present. As the 
soil moisture increases loblolly becomes more plentiful, until it is the 
dominant species. 
As on loblolly pine land, there is nearly always a lower story of 
hardwoods. Where the soil is very dry oak sprouts sometimes get 
possession of small areas to the exclusion of pine. 
