324 TIMBER AND TIMBER TREES. [CHAP. 
TABLE CLXVII.—NON-CARBONISED BRITISH OAK. 
| Deflections. Total 
1 
! 
F Weignt 
—_—————] weight 2 = 
Number | with the At required 34 ss: ee 
ofthe apparatus | the crisis | to break | & & oO Drea 
specimen. weighing of. each wae | 7 aa 
390 Ibs, | breaking. | piece. ane: 
Inches. Inches. lbs. lbs. 
I 2:00 | 3°75 | 700 | 643 | 175°00 
2 2°50 5°00 770 650 | 192°50 
Kept dry in the 
1470 1293 | 367°50 store-room. 
Total | 4°50 8°75 
| 
Average: 2°25 4°375 735 | 646°5 183°75, 
4 2°75 415 485 | 1064 | 121°25 
5 | 3°50 4°50 420 | 1085 | I05°00 
6 | 3°50 4°35 440 | 1090 | 110° | | Kept in a box 
Total .' 9°75 | 13°00 | 1345 | 3239 | 336-25 eb munurs, 
Average; 3°25 4°33 | 448 33, 107966] 112'08 
Remarks.—No. 1 broke with scarph-like fracture, 7 inches in length ; 2 broke in three 
Pieces, each scarph-like, 7 inches in length ; 4 broke with scarph-like fracture, x4 inches in 
length ; 5 broke rather short, with small splinters; 6 broke with scarph-like fracture, 
8 inches in length. 
All the specimens that were kept dry, whether 
carbonised or not, were apparently in good condition ; 
but those which had been placed in manure or damp 
earth, were more or less in a state of decomposition, 
the softer parts of the concentric layers being slightly 
wasted away with rot on the surface. The difference 
in. strength between the carbonised and non-carbonised 
pieces was not very great, but the tables show that 
of the pieces kept dry, the loss of strength was greatest 
by about 8 per cent. in the carbonised specimens; and 
of those kept in manure, the loss was about 1% per 
cent. in excess on the non-carbonised pieces. When 
the experiment for testing the strength was completed, 
