BLACK WALNUT I ITS GROWTH AND MANAGEMENT. 23 



A few selected measurements are given below as illustrating the 

 rate of diameter growth under specific conditions. It should be 

 noted that they do not afford a safe basis for the comparison of dif- 

 ferent regions, since local differences in soil and stand may affect the 

 rate of growth even more than a wide geographical separation : 



(1) Near Indianapolis, Incl. ; illustrating the difference in diameter growth of 

 four trees that grew in the open and three that grew in the forest. The two 

 situations were about one-quarter of a mile apart and the soil in both cases 

 was deep, dark loam. The stand containing the forest-grown trees was open 

 and parklike, as a result of cutting operations in late years. The other species 

 in the stand were white ash, white oak, white elm, beech, sugar maple, hack- 

 berry, Kentucky coffee tree, and hornbeam. (Table 4, No. 1.) 



(2) Fayette County, Ohio; a similar comparison of diameter growth in open 

 fields or groves (45 trees) with that (of 13 trees) in dense stands of mixed hard- 

 woods. The growth both in the open and in the forest is less than in the pre- 

 ceding case, probably due, in part, to less favorable soil and moisture condi- 

 tions. (Table 4, No. 2.) 



(3) Near Indianapolis, Ind. ; eight trees that grew on a southwestern slope 

 on the southern edge of a mixed hardwood stand of ash, elm, and white oak. 

 (Table 4, No. 3.) 



(4) Near Indianapolis, Ind. ; six trees in a pure walnut grove on a flat 

 meadow adjoining a mixed hardwood stand of oak, elm, ash, and hackberry. 

 This stand is now somewhat dense and diameter growth is probably relatively 

 low in late years. (Table 4, No. 4.) 



(5) Near Fort Wayne, Ind.; five trees in a virgin mixed hardwood stand 

 composed of white oak, elm, yellow poplar, and ash, with a slight amount of 

 black walnut, located on a flat, with deep, rich, loamy soil of potential agricul- 

 tural value. These trees are probably typical of the growth of the older walnut 

 stands cut 40 years ago. (Table 4, No. 5.) 



(6) Near Deer Park, Boone County, Mo. ; three trees from a grove on 

 bottom lands. (Table 4, No. 6.) 



(7) Eleven butt logs laid aside for veneering at Indianapolis; of unknown 

 source, but probably from Indiana. These are very choice logs — round, clear, 

 of rapid growth, and indicative of the average maximum growth in this 

 region. (Table 4, No. 7.) 



(8) Two butt logs from Marshall, Ind. (Table 4, No. 8.) 



(9) Five butt iogs from Farmersburg, Ind. (Table No. 4, No. 9.) 



(10) Four butt logs from Carmel, Ind. (Table 4, No. 10.) 



(11) Seven butt logs from Shreve, Ohio. (Table 4, No. 11.) 



(12) Six butt logs from Mount Gilead, Ohio; apparently came from a wheat 

 field. (Table 4, No. 12.) 



(13) Five butt logs at Farmville, Va. ; probably forest grown in mixed hard- 

 wood stand on rich bottom land. (Table 4, No. 13.) 



(14) Seven stumps, New Jersey. (Table 4, No. 14.) 



( 15 ) Two stumps near Cameron, Mo. ; in a mixed hardwood stand on a 

 northern exposure considerably above the stream bottom. Stump diameter, 

 17 inches, age 59 years. False rings were numerous. This growth was a little 

 below the average. 



(16) Three stumps on the Kansas River bottom lands near Lawrence, 

 Kans. Averaged 28 inches in diameter, stump height, at 63 years ; a very 

 rapid growth. 



(17) Three butt logs at Kaw City, Okla. Averaged 30 inches in diameter 

 on the butt end at 88 years, which is also above the average. The logs came 

 from the bottom lands of a tributary of the Arkansas River. 



