THE SOUTHERN" CYPEESS. 49 



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 js 

 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 favor- 

 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. 1 



The best cut in several years in a representative region hi 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 ill Louisiana, 

 where sufficient seed trees had been left, contained 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 in 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 

 classe . As virgin timber becomes more scarce and second-growth 

 cypress more valuable and important there will bo need for yield 

 tables of fully stocked pun- stands for use ill calculating futuro yields 

 and returns from management. 



I < apt. E. 'I . I <>ry,cy, Morgan, La. 

 96612°— Bull. 272—15 4 



