On the Resistance of Solids¢ 
age 
Woods, Bee 
Ree 
a 
Teax (Tectona 
grandis). 
Java, seasoned, ..$|1-509 
Pegu, seasoned, j|1-400 
Malabar,seasoned,$|1°395 
Alder (Bet. Alnus) |1°506 
Mulberry(Morus) |1-492 
1°22] 
Elm (Ulmus) ....|1°432 
Firs (Pinus). 
Pitch pine,.....- t}1-398 
BG. sac! ep ete sa) 1-580 
Fir (strongest) ..$]1-318 
Pitch pine, ....1)1'284 
Pine (Pin du 
Nord), ... et Pa 
Larch (Pinus 
Larix), .-. Be 
Fir, strong red, .. 
Fir,Memel,season 
Fir, Russian .... 
+ 
EIB farsi stevie ovel dhaser< 1-061 
Bir iioe iso's 1-039 
Fir, Riga .... ..{|0°963 
Fir, American 0:942 
OLS ees Geneon 0903 
—, yellow deal {0-900 
Tir, weakest 0-879 
Larch, Scoteb, 
seasoned .. } pee 
Pitch pine .....- 0°830 
Larch, Scotch, 
very dry, ..} 
Fir, Scotch (P. 
sylvestris) } 
Fir, white deal .. 
Sissor, of Bengal 
Preece ton. 
Willow (Salix) ..|1'957 
Willow, dry .... t|0°809¢ 
+ The specimen was taken from the middle between the centre 
425 
TABLE III.—(continued.) 
sde|es 
entree Authority. 
Syed im 
14,220 | 0-697 |Layman, Nich. Journ. xxxv. 54. 
13,194] 0-619 |{dem. 
H 3,140 0°688 [dem. 
14,186 Muschenb, Intr. ad Phil. Nat. i. 414 
14,054 
11,501 i dem. 
13,489 Idem. 
13,176 Layman, Nich. Journ, xxxv. 54. 
13,000 tarlow, Rees’s Cyclop, art. Strength 
12,420 Banks, Gregory’s Mech. i. 127. 
12,096 Beaufoy, Ann. of Phil. ix. 504, 305. 
11,913 Duhamel, Transport du Bois, 460. 
0:636 |By my trials.+ 
Muller, Pract. Fortification, 76. 
By my trial. ‘ 
Layman, Nich. Journ. xxxv- 54. 
Rarlow, Rees’s Cyclop, art. Strength, 
idem. . 
Beaufoy, Ann. of Phil. ix. 290, 291. 
Layman, Nich, Journ, xxxv- 54, 
Muschenb. Intr, ad Phil. Nat. i. 414- 
Layman, Nich. Journ. xxxy. 54, 
Banks, Gregory’s Mech, i. 127. 
0459 
Layman, Nich. Journ. xxxv. 54, 
Muschenb. Intro. ad Phil. Nat. i. 414. 
By my trial, very young wood, the la- 
teral cohesion between the annual 
rings was 1760 Ibs. per inch superfi. 
By my trials, it was seasoned. 
By my trials, very dry. 
Layman, Nich, Journ. xxxv. 54. 
(dem, 
Muschenb. Intr.ad Phil. Nat. i. 415, 
Idem. 
Duhamel, Trans. du Bois, 419. 
and sapwood, 
about three feet from the root ;—the diameter of the tree was nearly 18 inches, 
and the wood from which 
planks about six months. 
been cut into two-inch 
hard, and weighed 593 pounds 
the specimen was taken had 
The wood was tough, 
per cube foot ;—the distance of the annual rings was about an-cighth of an inch, 
and the wood appeared silky when planed. 
Athol’s estate at Blair, 
of William Atkinson, Esq, 
It was grown upon the Duke of 
in Scotland ; and the experiments were made at the desire 
Architect to the Ordnance, &c, 
TABLE 
