148 
MISCELLANEOUS TABLES. 
TABLE XT. 
Shewing the mean Strength and Elasticity of various species of Timbe 
according to the additional Experiments made by P. W. Barlcv 
Esq., C.E. 
4 
2 
2 
2 
2 
2 
35 
Name of the Wood. 
Acacia 
Oak 
„ superior quality... 
Tonquin Bean 
Locust 
Bullet Tree 
Greenheart 
Cabacally 
African Oak, superior] 
quality | 
American Black Birch 
Common Birch 
Ash 
Elm 
Christiana Deal 
Memel Deal 
Value of S 
from the 
formula 
S = — • 
1867 
1413 
2149 
3626 
3437 
2650 
2737 
2518 
2496 
1818 
1928 
2037 
1118 
1556 
1731 
Value of E 
from the 
formula 
^ m' 
E = 
144000 
125900 
192300 
332000 
243200 
328600 
332000 
230900 
288100 
184600 
205600 
161100 
92750 
198700 
205400 
Specific 
gravity. 
710 
891 
752 
1058 
954 
1029 
1000 
900 
983 
649 
711 
714 
543 
689 
590 
Weight of 
One Cubic Foot 
In lbs. 
44-37 
55- 68 
47-00 
66-12 
59-62 
64-31 
62-50 
56- 25 
61-43 
40-56 
44-43 
44-62 
33-93 
43-06 
36-87 
In cwti 
3965 
497!l 
419( 
5904 
5323 
5742 
558G 
5022 
548-3 
3621 
3967 
3984 
3030 
3844 
3292 
The ahove experiments were made upon scantlings 2 inches square and 50 inches 
length, clear of the supports. — For the original table and experiments, see Barlow 
Treatise on the Strength of Materials, page 153. 
The Tables of Constants, in the former part of this work, are founded upon the mi 
values of S and E, for the various woods specified in this and the preceding table ; the val 
of S and E, for Oak, Ash, and Elm, being those given in Table X. 
