From a recent paper on "Tree Planting on the Plains," by Robert W. Furnas, we extract the following statistics of the growth of trees, as shown by actual measurement of trees of known ages. The measurements were made at the uniform height of two feet above the ground :

Common Name.

Scientific Name.

Years Old.

Circumference. (Inches)

White Elm.............

Ulmas Americana..........

15

24 3/4

Red Elm...............

" fulva..........

24

36

Osage Orange....

Masclura aurantiaca..........

25

26 1/4

Soft Maple........

Acer dasycarpum.........

18

54 3/4

" "

" "...................

18

69 1/4

Box Elder....

Negundo aceroides........

14

25 1/4

" "

" "...........

14

31 1/5

Honey Locust........

Gleditschia triacanthos..

22

40 1/4

" "

" "....................

22

41 1/2

Black " ..........

Robinia pseud-acacia___

24

60 1/2

Kentucky Coffee Tree..

Gvmnocladus canadensis

14

25 1/2

Sycamore..........

Platan us occidentalis....

16

43 1/2

Black Walnut.......

Juglans nigra........

22

48

" "

" ".....................

22

50 1/4

White " ..........

" cinerea...............

22

49 1/4

Shagbark Hickory........

Carya alba..........

24

30

Chesnut.........

Castanea vesca, var. Am.

14

24 1/2

Burr Oak.........

Quercus macrocarpa..................

22

36 1/8

White " ..............

alba............

22

29

" Ash.....

Fraxinus Americana....

22

32 1/4

Green "..............

" viridis........

22

30

Cottonwood...........

Populus monilifera..........

23

78 1/4

"..........

" "....................

23

93

White Pine...........

Pinus strobus...........

20

36 1/4

Scotch ".........

" sylvestris..........

15

23

Australian Pine..............

" laricis, var.........

15

22 1/2

- American Naturalist.