XXIX.] 
RIGA FIR. 
249 
Table CXXXII. 
Vertical or Crushing Experiments. 
u c 
(V v <u 
g 
E-r, 
rj g 
'5 <V V 
E 
c, • r? 
Scantling. 
Area 
in square 
Weight 
of the 
0 hi 
Crushed 
with 
Ditto on 
1 square 
3 0 0. 
inches. 
specimen. 
bJO 
inch. 
Inches. 
Inches. 
lbs. oz. 
Tons. 
Tons. 
25 
I 
\ 
O I 
9‘875 
2-469 
26 
2 
O 2 
8*437 
2-109 
27 
3 
O 3/z 
11-500 
2-875 
28 
4 
O 4/4 
9-000 
2-250 
29 
5 
0 7 
10-500 
2-625 
30 
6 
0 %y 2 
11-250 
2 "812 
31 
7 
0 10 
11-125 
2-781 
32 
8 
2X2 
4 
0 ioJS^ 
11 -OOO 
2-750 
33 
9 
0 12 
10-000 
2-500 
34 
10 
0 15 
8-ooo 
2'000 
35 
11 
1 1 
9-750 
2-437 
3 6 
12 
1 3 
11-125 
2-781 
37 
18 
1 6 
9-875 
2-469 
38 
24 
1 
6-875 
I- 7 I 9 
39 
30 
2 5/4 
7-375 
1-844 
40 
12 
28 1 
647 
367-80 
3-678 
4 1 
42 
15 
18 
► 9% x 
IOO < 
27 7 
33 0 
506 
5°7 
214-70 
245-40 
2-147 
2-454 
43 
21 
( 
48 3 
634 
245-40 
2-454 
44 
18 
) 
( 
46 6 
646 
107 -OO 
2-784 
45 
21 
> 10 y 2 x \oy 2 
IIO-25 { 
54 11 
654 
307-00 
2-784 
46 
24 
\ 
( 
55 4 
577 
279-20 
2-532 
47 
27 
| 12x12 
144 j 
85 0 
604 
378-72 
2-630 
48 
30 
92 6 
593 
396-28 
2-752 
E = 752420. S = 1575. 
The Riga is of slower growth than the Dantzic Fir, the 
difference being about o - 4 layers per inch in diameter 
(vide Table II.); this, in view of the theory previously 
set up, indicates that it is inferior to the Dantzic Fir. 
Contracts for the supply of Riga Fir timber, and 
hand-masts for the royal navy, are made annually; 
the quantities of each kind varying according to the 
requirements of the several dockyards. They are 
received under the following specification and con¬ 
ditions, viz., the timber at per load of 50 cubic feet, 
and the hand-masts at each. 
