TIMBERS. 
TENSILE EXPERIMENTS. 
457 
(Laslett.) 
Number of Dimensions of Specific Ho. Direct cohesion 
the specimen. each piece. gravity. brake with: 1 square inch. 
Inches. Lbs. Lbs. 
7 F) 997 14560 3640 
8 1079 20600 6650 
9 2X2 x 30 1037 24360 6090 
10 1108 26600 6650 
II 1026 28840 4210 
Average. 1049 24192 6048 
VERTICAL OR CRUSHING STRAIN ON CUBES OF Two INCHES. 
Ditto on 
No. 12. | No. 13. | No. 14.] No. 15.| No. 16.| No.17.| Total. | Average. | 1 square inch. 
Tons. | Tons. | Tons. | Tons. | Tons. | Tons. Tons. Tons. Tons. 
12875 13000 12450 | I1I25 10500 | 13625 93875 12312 3078 
E = 778300. S = 1869. 
EXPERIMENTS ON THE TRANSVERSE STRENGTH OF Woop or 
£. globulus, by Baron von Mueller and J. G. Luehmann. 
The pieces were two inches square, two feet long between the 
supports, the weight suspended in the middle, both ends free. 
The timber was seasoned nine months. 
(See page 344.) 
Deflection. 
Total weight rs 
é 1b Specific 
No.| With | Afterthe | aren rea Soe Ww 
Apparatus} Weight Crisi iS WEE LS Sein 4 Gravity. 
Bec Tisis of piece. 
Weighing was Reestine 
42olbs. removed. FES SIng: 
Inches. Inches. Inches. Lbs. 
rr iz +04 “75 2444 1833 -938 
2 -08 Nil. -62 3224 2418 +992 
3 +16 -O4 -58 2250 1692 913 
4 -12 +04 “75 2661 1996 +942 
5 +10 -02 “75 24740 2055 .946 
6 +12 -03 +55 2288 1716 +927 
y] Sy! +02 “95 2409 1807 -924 
8 Bie! -04 «58 2280 1710 | 845 
9 +16 -04 62 2252 1689 | 852 
10 05 Nil. 58 3752 2814 1.094 
1I -08 Nil. 65 3024 2268 1.096 
S (strength) = 
L (length) x W (weight) 
4 x b (breadth) x d2 (depth?) 
