262 
TIMBER AND TIMBER TREES. [chap. 
deck and planking purposes (for which it was judged to 
be especially suitable), in place of Baltic Fir and Pine 
timber. 
It disappointed, however, the expectations of the 
officers, as it was soon found to shrink so excessively, 
that it was impossible to keep it weather or water-tight; 
in consequence of this it was removed from the ship- 
The remains of the parcel therefore passed into conver¬ 
sion for the most common and ordinary services, and, 
of the board produced, much was used for berthing in 
the timber sheds. It stood the test of exposure in such 
situations for fully eight years without showing any signs 
of decay, but exhibited a disposition to warp and shrink 
far exceeding that of any other wood in present use in 
carpentry. 
The subjoined Table, No. CXXXIX., shows that the 
Russian Larch is slightly deficient in transverse strength, 
as compared with the Firs and Pines; but, otherwise, it 
is above their average. 
Table CXXXIX.—Larch (Russian). 
Transverse Experiments. 
Number 
of the 
specimen. 
Deflections. 
Total 
weight 
required 
to break 
each 
piece. 
1 
Specific 
gravity. 
Weight 
reduced 
to 
specific 
gravity 
600. 
Weight 
required 
to break 
1 square 
inch. 
With the 
apparatus 
weighing 
390 lbs. 
After the 
weight 
was 
removed. 
At. . 
the crisis 
of 
breaking. 
Inches. 
Inch. 
Inches. 
lbs. 
lbs. 
I 
1-25 
•15 
4’5 
743 
688 
648 
18575 
2 
i '5 
•15 
5 '° 
7 i 4 
697 
615 
178-5° 
3 
1 ‘5 
•OO 
475 
708 
645 
658 
I77-00 
4 
175 
•25 
3’85 
504 
6l8 
489 
1 26 ’OO 
5 
i 75 
•15 
4 -i 5 
568 
647 
527 
142 -OO 
6 
1-65 
•35 
375 
519 
583 
534 
12975 
Total . 
9-40 
1-05 
26 - oo 
3756 
3878 
347 i 
939-00 
Average 
1-566 
•175 
4*33 
626 
646-3 
578 
1567 
Remarks.— All broke with a moderate length of fracture. 
