748 



JOURNAIv OF FORESTRY 



when 2-inch diameter classes are used, it is obvious that it is more im- 

 portant to know whether a tree is a httle over or a little under 13 or 15 

 inches than to know whether it is just under or just over an even diam- 

 eter. The correct distances from the left end of the stick, at which 

 graduations for odd diameters should be put, are as follows : 



figures to be Used in Graduating a Biltmore Stick 



Diameter of 



tree, 



inches 



Distance from eye to tree, inches 



24 



25 



26 



Distance to be marked on stick, inches 



27 



3- 

 5- 

 7- 

 9- 

 II . 



13- 

 15- 

 17- 

 19. 

 21. 

 23- 



25- 



27. 

 29. 



31- 

 33- 

 35- 

 37- 

 39- 

 41- 

 43- 

 45. 

 47- 

 49. 



51. 

 53. 

 55. 

 57. 

 59 

 61 

 63^ 

 6S 



2. 



4- 

 6. 



7- 

 <)■ 



ID. 

 II. 

 12. 

 14. 

 15. 

 16. 



17- 

 18. 

 19. 

 20. 

 21. 

 22. 

 22. 

 23. 



24- 



25- 



26, 

 26. 

 27. 

 28. 

 29, 

 29, 

 30 

 31 • 

 31 

 32 



33 



82 

 53 

 13 

 63 

 05 

 39 

 67 

 89 

 06 

 18 

 26 

 31 

 31 

 29 



23 

 15 

 04 



91 



.75 

 58 

 38 

 .17 

 94 

 69 

 .43 

 ,16 

 .87 

 .56 

 ■25 

 .92 

 .58 

 •23 



2.83 



4.55 



6.16 



7.68 



9. II 



10.47 



11.77 



13.01 



14.19 



15-34 



16.44 



17-50 



18.52 



19.51 

 20.48 

 21.41 

 22.32 

 23-21 

 24.07 

 24.91 



25-74 

 26.54 



27.33 

 28.10 

 28.85 

 29-59 

 30-31 

 31-03 

 31.73 

 32.41 

 33.09 

 33.75 



2.83 



4-56 



6. 19 



7.72 



9.17 



10.54 



11.86 



13.12 



14-32 



15-48 



16.60 



17.68 



18.72 



19.73 

 20.71 

 21.67 

 22.59 

 23.50 

 24.37 

 25.23 

 26.07 

 26.89 

 27.70 

 28.48 

 29.25 

 30.01 

 30.75 

 31-47 

 32.19 

 32.89 

 33.58 

 34.26 



2.84 

 4-58 

 6.21 

 7.76 

 9.22 

 10.61 

 11.94 

 13.22 

 14.44 

 15-62 

 16-75 

 17.85 

 18.91 

 19.94 

 20.94 

 21.91 

 22.85 

 23.77 

 24.67 

 25-54 

 26.40 

 27-23 

 28.05 

 28.85 

 29.64 

 30.41 

 31.16 

 31.90 

 32.63 

 33-35 

 34-05 

 34-74 



2.85 

 4.59 

 6.24 



7-79 

 9.27 

 10.68 

 12.03 

 13-32 

 14.56 

 15.75 

 16.90 

 18.01 

 19.09 

 20. 14 



21.15 

 22.14 

 23.10 

 24.03 

 24.94 

 25-84 

 26.71 

 27.56 

 28.39 

 29.21 

 30.01 

 30.79 

 31.56 

 32.32 

 33.06 

 33-79 

 34-51 

 35-21 



The reverse side of the stick can be used as a Merritt hypsometer by 

 allowing 6 inches on the stick to each 16.3-foot log in the tree. If the 

 arm length is 25 inches, the distance from eye to tree should be 67.9 

 feet. Similarly, for arm lengths of 23, 24, 26, and 27 inches, the dis- 

 tances from eye to tree should be 62.5, 65.2, 70.6, and 73.3 feet, respec- 

 tively. 



