154 TIMBER AND TIMBER TREES. [cHap. 
strain, or by a crushing force in the direction of its fibres. 
Tried by the latter process, it exhibits a peculiarity 
unshared, I believe, by any other timber except Sabicu. 
It bears the addition of weight after weight without 
showing any signs of yielding ; and, when the crushing 
force is obtained, it gives way suddenly and completely, 
with a loud report, nothing being left of the pieces but a 
Joose mass of shapeless fibres. 
The Greenheart timber is not usually hewn in the 
perfect manner that Teak, Mahogany, and many other 
woods are when prepared for shipment to the markets of 
this country, but comes from Demerara only partially 
dressed, a great deal of wane being left upon the angles. 
The butts are also almost invariably left with the snapped 
ends, as prepared for drawing out of the forest, instead 
of being cut off square. Its form should therefore be 
considered with the price quoted per load, as it will not 
compare favourably with well-squared timber. 
TABLE LXXIII.—GREENHEART (DEMERARA). 
Transverse Experiments. 
Deflections. pal iat a age Weight 
Number | with the | Afterthe | At sere Be | te a 
: apparatus | weight | the crisis | to break a8 | specific to-brea 
Specimen. | Veighing was o each wth |gravity| 7 ih 
390 lbs. | removed. | breaking. | piece. 1000, anehs 
Inches, Inch, Inches. Ibs. r= Ibs. 
I 2°15 "05 5°00 | 1,235 | 1180 | 1047 | 308°75 
2 2°00 ‘00 4°75 1,656 | 1193 | 1388 | 414°00 
3 2°25 15 4°00 | 1,305 | 1079 | 1209 | 326°25 
4 2°00 “00 5°00 | 1,212 | 1152 | 1052 | 303°00 
5 2°25 15 4°15 | 1,258 | 1172 | 1073 | 314°50 
6 2°25 05 4°25 | 1,329 | 1122 | 1184 | 332°25 
Total .| 12°90 | 40 | 27°75 | 7,995 | 6898 | 6953 |1998-75 
Average] 2°15 | ‘066 4°625 | 1,332°5 | 1149°6,1158°8 | 333125 
Remarks.—Nos. 1, 2, 3, and 6 broke with splintery fractures to rg inches in] h ; 
4and 5 with similar fractures, but only 10 to 12 inches in length. as rer 
