THE SOUTHERN CYPRESS. AQ 
In many important timber species a commonly accepted standard 
of the ‘‘cut” of average stands becomes well established. Thus, in 
the better cypress regions, a cut of 12,000 to 15,000 feet per acre is 
a recognized standard over large areas. One fully stocked cypress 
stand of mixed ages along the Apalachicola River in Florida, ranging 
from large mature trees 40 inches in diameter down to 10-inch trees, 
contained an average of 112 cypresses and 48 hardwoods (chiefly 
tupelo gum), or a total of 160 trees per acre. The indicated yield, 
by Doyle rule (Appendix, Table 20), after allowing 20 per cent for 
defect, was 43,600 feet of cypress per acre. In Louisiana, an average 
yield of 45,000 feet per acre is limited to relatively small areas of. 
timber. Maximum yields of virgin cypress of from 50,000 to 60,000 
per acre occur on small tracts or cypress ‘‘ brakes”’ in the most favoi- 
able situations. Stands are reported as having cut 100,000 feet on 
selected acres. One acre on Grand River, Louisiana, was estimated 
by an experienced lumberman to contain 127,000 feet of merchant- 
able cypress.’ ; 
The best cut in several years in a representative region in the Grand 
River basin in southern Louisiana was an average of 35,000 feet per 
acre from a 40-acre tract, or a total of 1,400,000 board feet. Dur- 
‘ing a period of 50 years or more early float logging culled out many 
individual cypress trees, mostly in localities subject to periodic high 
water and near main water courses. The average yield per acre, also 
the average grade, increases notably in many logging operations upon 
working away from the water fronts farther back into the deep 
swamps. 
A 30-year old stand of cypress in an old cutting in Louisiana, 
where sufficient seed trees had been left, contaimed an average of 
340 trees per acre about 5 inches in diameter at breastheight. Mature 
cypress stands, from 250 to 350 years old and well stocked, usually 
contain from 40 to 60 trees per acre. In more scattered and typical 
stands, in some regions, the trees from 12 to 20 inches in diameter 
may average about 40 trees per acre, older timber from 18 to 24 
inches in diameter about 30 trees per acre, and stands of large trees 
from 2 to 4 feet m diameter mostly from 15 to 20 trees per acre over 
large areas. 
_ The number of trees per acre and the size of the individual trees 
both show great irregularity in tracts as small as 40 acres. Cypress 
occurs mostly in all-aged stands made up of several even-aged 
classes. As virgin timber becomes more scarce and second-erowth 
cypress more valuable and important there will be need for yield 
tables of fully stocked pure stands for use in calculating future yields 
and returns from management. 
1Cant. E. T. Forgey, Morgan, La. 
96612°—Bull. 272—15—_4 
