284 



VERBENACEJE. 



[Teclona. 



They therefore exhibit a more rapid rate of growth than average specimens would 

 do. 



* There is evidently a mistake here. The tree which yielded this section must have been an older tree 

 standing in the plantation of 1852. 



The sections ranged in age from 5 to 33 years. Dividing them into three groups, 

 two of 10 years each, and the third of 9 years, we obtain the following as the mean 

 diameter in inches of these three groups: 



Mean diameter of trees 514 years old 

 15-24 

 8583 



Inches. 



9-72 

 1379 

 1871 



