XXVII.] 
ELM. 
221 
Table CXV. 
Tensile Experiments. 
Number 
of the 
specimen. 
Dimensions 
of 
the pieces. 
Specific 
gravity. 
Weight the 
piece 
broke with. 
Direct 
cohesion on 
1 square inch. 
Inches. 
lbs. 
lbs. 
7 
\ ( 
690 
2I,o6o 
5 >° 4 ° 
8 
>2x2x30! 
625 
26,880 
6,720 
9 
) ( 
6ll 
18,480 
4,620 
Total. 
I926 
66,420 
16,380 
Average . 
| 642 
- * - — - — - 
22,140 
5,460 
Table CXVI. 
Vertical or Crushing Strain on cubes of 2 inches. 
3 
O 
O 
No. ix. 
No. 12. 
No. 13. 
No. 14. 
No. 15. 
Total. 
Average. 
Ditto on 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
i square 
inch. 
IOU25 
IO'OO 
IO '75 
I0-50 
10-25 
IO '375 
On 
to 
d 
0 
10-333 
2 ‘583 
E = 250820. S = 1032. 
Contracts are annually made for the supply of English 
Elm timber for the royal navy, according to the follow¬ 
ing specification and conditions, the quantities of the 
several classes, and the quantity required for each of the 
dockyards, of course varying from year to year, to suit 
the works in hand. 
