14 



MISSOURI AGR. EXP. STA. RESEARCH BULLETIN 41 



The diameter growth of white oak in Carter County falls uni- 

 formly about one-quarter inch below the diameter growth for 

 seedling white oak in Kentucky and Tennessee until an age of 

 130 years is reached. At 140 years the two curves cross and 

 growth in the Ozarks thereafter rises sharply above that east of 

 the river. This may be a result however of a difference of pro- 

 cedure in constructing the two curves. 



The diameter growth of seedling chestnut oak in Kentucky 

 and Tennessee is almost identical with that of white oak in Mis- 

 souri until an age of 100 years is reached. Beyond that the chest- 

 nut oak falls behind very distinctly. 



Except during the first three decades the diameter growth of 

 black oak in Missouri is more rapid than that of black oak east of 



TABLE VI. RELATION OF AGE, HEIGHT AND VOLUME TO DIAMETER AT BREAST- 

 HEIGHT BLACK JACK OAK. 



