220 TIMBER AND TIMBER TREES. [cHaP. 
As Elm timber is best and most durable when worked 
up soon after the tree is felled, it is not necessary to keep 
in store more than is required from year to year. If, 
however, it should be thought desirable to accumulate 
stock with the view to provide against emergencies, it 
will be most effectually preserved for future use by 
keeping it constantly under water, or burying it in mud. 
Table CXIV., showing the transverse strength of this 
wood, is not so full or satisfactory as could be desired, 
owing to the difficulty experienced in finding pieces 
sufficiently straight in the grain for experimental pur- 
poses. The Tables CXV. and CXVL, showing the tensile 
and vertical strength, are, however, more reliable. 
TABLE CXIV.—ELM (ENGLISH). 
Transverse Experiments. 
Deflections. Total Weight . 
x Weight 
hi 2 duced g 
Number | with the | Afterthe | | At__ required ee | to. | eed 
specimen. |ApbaatDe| weight | the Gis | tobreake | BE |specife| square 
390 Ibs. | removed. | breaking. | piece. 700. a 
Inches, | Inches. | Inches. Ibs. Ibs. 
1 ee wes 3°50 saz 578 |... ae 
2 5°25 1°25 7°50 510 571 | 625 | 127°5 
3 a ais 6°25 a 558 |... =e 
4 Ha 1 4°00 se 553 | we Ee 
5 4°75 | 1°30 | 5°50 | 350 | 545] 450) 87°5 
6 4°70 1°35 5°00 320 542 | 413 80'0 
Total .| 14°70 3°90 | 31°75 1,180 | 3347 | 1488 | 295‘00 
Average} 4°90 1°30 5291 | 393 | 558] 496) 98°33 
