446 
AUSTRALIAN NATIVE PLANTS. 
TENSILE EXPERIMENTS. 
(Laslett.) 
| Noseber of Dimensions of Specific Po oes Diet a 
i pecimen. each piece. gravity. | . . 
emt | broke with. | I square inch. 
Inches. Lbs. | Lbs, 
7 31,080 | 7-779 
8 Lato | Lg 
9 31,3 7. 
: 10 Ree 31,360 7-840 
TI | 22,120 | 5-530 
12 22,960 5.740 | 
Average “981 28,280 | 9.070 
| 
| 
| 
VERTICAL OR CRUSHING STRAIN ON CUBES OF SIX INCHES. 
| Ditto on 
No. 13. No. 14. Total. Average. I square inch. 
Tons. Tons. Tons. Tons. Tons. 
175 195 37° 185 5.14 
E = 930,940. S = 2,264. | 
TABLE SHOWING COMPARATIVE TESTS OF “INDIAN 
TEAK” AND “ENGLISH OAK.” 
Compared with Western Australian Tuart (EZ. gomphocephala), 
Jarrah (Z. marginata), and Karri (E. diversicolor). 
a) sl = aot 
e |2| Bs ag | Sse | 
5 = 5 2 | Average Tensile Experiments.| 2» 25 | ot0=¢! 
o o I O--="R hyn 
+ u = =, iG mee) 
Ou on ss 2 =] SS Ss as Ss) 
Nameof wood| 6 o| ad 22 ce en 
wo = & s F : s ro wo Z oUn =) 
cre (ee > | Dimen- | Weight | Direct csc |4 e35 / 
‘o &| os sions of | the piece | cohesion] 7-4 3 Esz | 
= a © & jeach piece|broke withjof 1 sq. in. = 7, a 5 | 
& ° i 
Value Lbs. per | Lbs. per | In tons 
Lbs. of S. | Inches. sq. in. sq. in, | persgq.in, 
Indian Teak | 49.47 | 807} 2203 |2x2x30| 13,207 3,301 2838 14 yrs. | 
English Oak | 31.72 | 886) 2117 |2x2x30| 30,2847 4,571 3411 Oo st 
Tuart 43.06 |1169| 2y01 |2x 2x30] 40,487 10,284 4195 — 
Jarrah 63.12 |1010| 1800 |2x 2x 30 11,760 2,940 3198 12°: saan 
Karri 61.31 | 981| 2264 |2x2x30| 28,280 4,070 5140 12a 
From the Official Catalogue of Western Australia, Melbourne 
International Exhibition, 1880. 
