30 



Average height, 1905, 60 feet. 

 Average height, 1914, 65 feet. 



Summary of Data. 

 Total board feet to acre, 19C5, 

 Total board feet to acre, 1914, 

 Total gain in board feet per acre, 

 Current annual gain in board feet per acre. 



26,760 

 38,680 

 11,920 

 1,324 



South Lancaster, Mass. — Owner, Mrs. Abbie F. Kilbum. 



History. — This plantation joins that of Mr. Harold Parker, 

 only a stone wall separating the two lots. It was made by 

 Mr. Jonas Goss, and was planted in two sections, aged sixty 

 years and forty-one years, respectively. The spacing was 6 by 

 8 feet. Since that time trees of various ages have been added 

 around the edges. A survey was therefore necessary to show 

 the areas of the original lots of even aged trees, which are: for 

 the sixty-year old lot, 2.11 acres, and for the forty-one year old 

 lot, 2.02 acres. If all trees are included, the area is 7 acres, and 

 the figures given under "Treatment" were worked out on that 

 basis by Mr. W. G. Kilburn. 



Treatment. — In 1908 a thinning was made under the direc- 



