14 



PLANTING OF WHITE PINE IN NEW ENGLAND. 



ference, have grown especially fast and have become dominant; 

 Division II includes the main bulk of the forest. The trees in this 

 division have all made steady and determined growth from the start, 

 though by no means equal growth, as the table shows, for they range 

 from 12 to 19 feet in height, and so include many trees which will soon 

 be dominant, and many others which are plainly destined to be sup- 

 pressed. The divisions therefore do not correspond closely with that 

 frequently adopted into dominant, subdominant, and suppressed; they 

 are employed rather to distinguish between the body of the forest on 

 the one hand and on the other the exceptional individuals which are 

 conspicuously leading or conspicuously lagging behind. 



TABLE 1. Growth of planted white pine, East Greenwich, R. I. 



PLANTATION OF H. G. RUSSELL. 

 [Based on 306 trees 12 years planted.] 



Only 3 per cent of the trees are in Division I. They have made a 

 growth of only 0.8 foot in height per year, and 0.13 inch in diameter. 

 These trees are more distinct from the others than is usual. Thus, 

 while Division I shows only 0.13 inch per y ear as diameter increase, 

 and a height growth of less than a foot, the second class shows a growth 

 in diameter of from 0.18 to 0.37 inch per year, and a height growth of 

 1 to 1^ feet as the average. Division II in large measure represents 

 the portion of this grove which has been attacked once or more by the 

 white pine weevil." It includes 92 per cent of all the trees, varying 



The Division of Entomology of the United States Department of Agriculture is 

 now conducting special investigations of the white pine weevil, the results of which, 

 together with recommendations for controlling the insect, will be embodied in a 

 bulletin soon to be issued. 



