IX.] 
BRITISH OAK. 
57 
Table XI. 
Specimens as in Table X., weighted with 400 lbs. 
Supports, apart. 
3 Feet. 
4 Feet. 
5 Feet. 
6 Feet. 
No. 
Sp. gr. 
Inches. 
Inches. 
Inches. 
Inches. 
37 
795 
•375 
•625 
I-250 
2-125 
38 
785 
•312 
•625 
I-I25 
2'000 
39 
782 
•250 
75 ° 
I -187 
2-125 
40 
775 
A37 
•625 
I-3I2 
2'000 
Total. . 
3 * I 37 
i '374 
2-625 
4-874 
8-250 
Average. 
OO 
! 
1 
•343 
•656 
I - 2 l 8 
2-o62 
Further experiments with reference to deflections 
were made upon a piece of English Oak, 2 X 2 X 84 inches, 
specific gravity 792, with the following result:— 
Table XII. 
Weighted with 300 lbs. 
Supports, apart. 
3 Feet. 
4 Feet. 
5 Feet. 
6 Feet. 
No. 
41 
Inches. 
•125 
Inches. 
•375 
Inches. 
•625 
Inches. 
•875 
Table XIII. 
Weighted with 400 lbs. 
Supports, apart. 
3 Feet. 
4 Feet. 
S Feet. 
6 Feet. 
No. 
Inches. 
Inches. 
Inches. 
Inches. 
42 
•250 
•500 
•875 
1-125 
