Trends 

 400 



3607 



-r^ 



I ' ' ' • I ' 



I ' ' ' ' t ' ■ ' ' ] ' 



TRUE HICKORY 



1915 



1920 1925 1930 1935 1940 1945 



Figure 29-1 6C.— Production of hickory lumber (shogbark, shellbark, pignut and mock- 

 ernut) in the United States 1899-1942. (Drawing after Betts 1945a.) In 1965 production 

 of lumber from true and pecan hickories combined was 145.8 million board feet, of 

 which about 60 percent was pecan hickory (Clark 1973). 



1,200 



800 - 



O 400 



n p I I I I I I I I I I I I I I I 1 I I I I I I I I I I I I I 1 1 I I I I t I I I j I I I I 



MAPLE SP 



I 1 1 I I I 1 1 1 I 1 1 1 1 I 



±u 



illMlinihlllllMllMlll 



' ■ ■ ' I ' ■ ■ ■ I ■ ■ ' ■ 



1879 



1889 



1899 1905 '10 '15 '20 '25 '30 '35 '40 1945 



MAPLE SP 



ENTIRE EASTERN U.S. 



Figure 29-1 6D.— Production of maple lumber {Acer sp.). (Top) In the United States, 

 1869-1943; drawing after Betts (1945b). (Bottom) In the entire eastern United States, 

 1955-1979, and in the South only, 1960-1979. See figure 29-5B for states. (Data from 

 Bureau of the Census.) 



