16 BULLETIN 91, U. S. DEPARTMENT OF AGRICULTURE. 



Because of the shallow rooting system and small size of the stumps, 

 most of them could be pulled by a 2,800-pound team without the 

 use of blocks and line. The stumps that could not be pulled by a 

 team were split by a small charge of dynamite, and the remaining 

 pieces were pulled out by a team. The second growth on this land 

 consisted of poplar and bird cherry. Small logs were numerous. The 

 various items entering into the cost of clearing were not kept sepa- 

 rately. The superintendent said that they were approximately as 

 follows : 



To cut, pile, and burn brush, per acre §10. 00 



To pile and burn logs, per acre 12. 00 



To pull, pile, and burn stumps, per acre 17. 30 



Total cost per acre 39. 30 



TRACT NO. 7. 



Tract No. 7 contained 60 acres, principally of heavy clay soil, in 

 a few places having sandy-loam soil with a heavy clay subsoil 6 inches 

 below the surface. The land was nearly free from stones and was 

 gently rolling. The outfit used was a tripod stump puller. This 

 tract had been logged 20 years before. All the stumps were white 

 pine. There was no undergrowth or logs. The tract had been pas- 

 tured several years and at the time of stumping was covered with a 

 fairly good clover sod. 



The sizes of 354 white-pine stumps selected at random and meas- 

 ured on this tract were as follows: 12-inch, 2; 14-inch, 2; 16-inch, 11; 

 18-inch, 28; 20-inch, 37; 22-inch, 35; 24-inch, 88; 26-inch, 65; 

 28-inch, 42; 30-inch, 21; 32-inch, 13; 34-inch, 6; 36-inch, 4. The 

 average diameter was 24.6 inches. The average height was 36 inches. 

 The total number of stumps pulled was 2,464, the average per day 

 being 54. The average number per acre was about 41 . Details of the 

 cost are given in Table VII. The stumps on this tract were piled 

 in the fall of the year and will be permitted to dry out for about 

 two years before any attempt will be made to burn them. 



Tabi.k VII. — Cost of slum-ping tract No. 7. 



Item. 



PulliriL', cleaning, and tipping stumps: 



"ii, -if; 'lays each 



2 men with team, 46 days each 



■ if machine 



Piling and burning (estimated) 



Total 



Average per acre. . . 

 Average per stump. 



Days em- 

 ployed. 



Cost. 



Per diem. 



si 7.1 

 4.50 

 1.50 



Total. 



$161.00 

 414.00 

 69.00 

 300 00 



1,444.00 

 24.07 

 .586 



