INVESTIGATIONS IN WHITE PINE PLANTATIONS. 11 



which now prove that white pine can be planted in New England at a 

 profit. 



In a few cases successful seeding- has been practiced. The seed was 

 sometimes sown broadcast and sometimes in prepared spots. (See 

 PL III.) It has frequently proved successful where practiced on rather 

 bare areas or on pastures under conditions which favor natural repro- 

 duction. At Bridge water, Mass., Hon. Augustus Pratt fifty years ago 

 planted an old pasture to white pine seed. The crop was sold on the 

 stump several years ago for $160 per acre, and was lumbered for box 

 boards. On the other hand, many failures have resulted from experi- 

 ments in broadcast sowing of white pine seed. In all recorded cases it 

 has been unsuccessful on cut-over lands having a heavy sprout growth. 



INVESTIGATIONS IN WHITE PINE PLANTATIONS. 



During the summer of 1901 careful surveys were made in the most 

 important white pine plantations of the East. The main object of this 

 examination was to determine the advisability of white pine planting 

 as a practical investment. Measurements were made in plantations 

 varying in age from 11 to 48 years. The investigation included the 

 diameter and height measurement of 98,995 trees in Massachusetts, 

 New Hampshire, Rhode Island, Connecticut, and Virginia to deter- 

 mine the volume increment. Measurements of the annual growth were 

 also made to learn the rate of height growth of white pine, both planted 

 and native, for each separate year from the seedling stage. In addition, 

 similar measurements were made on several other conifers which were 

 found in mixture with the white pine. In the older plantations repro- 

 duction was studied and counts were made to determine the number of 

 seedlings per acre. Measurements were also made of trees on the 

 border of plantations in order to compare them with those in the inte- 

 rior. The effects of the white pine weevil on the growth of the tree 

 were carefully studied. 



The following plantations were examined: 



East Greenwich, R. I., 150 acres of white pine, European larch, 

 white oak, Norway spruce, and other species, owned by Mr. H. G. 

 Russell. 



Woods Hole, Mass., 200 acres of white pine, pitch pine, and red fir 

 ("Douglas spruce"), owned b}^ the Joshua S. Fay estate. 



North Beverly, Mass., 75 acres of white pine and red fir, owned by 

 Mr. John C. Phillips. 



Manchester, N. H., 150 acres of white pine, owned by Hon. Gordon 

 Woodbury. 



Enfield, Conn., 150 acres of white pine on sand plains, owned by Mr. 

 Omar Pease. 



Olivers Mills, Pa., 1,200 acres of white pine, owned by Gen. Paul A. 

 Oliver. 



