140 



TlMUKlt I'lNES or THE SOUTUEKK UNlTliU STATES. 



As u.snal in conifers, the tracbeids aif larjjc.st in tlie rodt.s iuul siniillcst in tlic linili.s. In these 

 ])in('s, i>.'*i>cci;(lly in T>on<;l('af riiie, tlicy arc larger in wi'll-grown wood tlian in that of cxtrcrnely 

 stunted trees, tliongli very narrow rings in otlierwise norunil trees do not sliaro tliis diiiiinntivi' .size 

 of the tracheid. (See fig. 18, A Jind li, where a few very narrow rings are made up of elements of 

 normal size.) 



Flo. 18.— Crosa flertion of iinrin.al juul ntuntcd ;n"owtli in Longloiif I'iin 



The following average figures illustrate the difference between wood from very stunted trees 



and that of normal trees in Longleaf IMne, of whicli we give an average tVoni an extensive series 

 examined: 



