382 SEVENTH REPORT—1837. 
Taste II. 
North Wales Iron.—Coed-Talon No. 2 Pig-Iron, Hot Blast. 
EXPERIMENT 1. EXPERIMENT 2. | EXPERIMENT 5. EXPERIMENT 4. 
Depth of bar, 1:071|| Depth of bar, 1-057] Depth of bar, 1°044|| Depth of bar, 1/065 
Breadth of do.1‘000|| Breadth of do. 1:010|, Breadth of do. ‘994|| Breadth of do. 1'002 
Distance between || Distance between | Distance between || Distance between 
supports, 4 ft. 6 in. supports, 4 ft. 6 in.|| supports, 2 ft. 5 in.|| supports, 2 ft. 5 in. 
Weight of bar 5 ft.!| Weight of bar, 5 ft. 
long, 153 lbs. long, 16 lbs. 
2/8 (et ¢/8 /e3l sls |st. 8/8 bes 
eleales| 2leglesi e\sel2el a lggles 
~ |ea/88l 2/38/88] 2 )esl\88] 8 Sei 88 
a |og|/ar e |osg|as = |osgi|ax ae | oglu 
on | GB | Org on | Gs | Org ep | GS | Org || “on a8 Ong 
S1qQ |As Sig |FAsii Bla AS Sig |As 
5 aie Pe fa = Hi & 4 
28 | -065|... || 98! -071| ... |i 112 |-081 | ... || 112 |-080 
56 | -130\-005 || 56 | -130!-005 || 924 |-070 | ... |! 224 |-066 
126 | -325|-025 || 126 | -329|-030 || 336 |-109 | + || 336 |-103 |-005 
182 | -508) +052 || 182 | -507| ‘056 || 448 | +152 | 007 || 448 | -144 | -007 
238 | -700)-085 || 238 | -698/ +089 |) 560 | -200 | ‘012 || 560 |-188 | ‘011 
294 | -910) +120 || 294 | -910) +124 || 672 |-251 | -020 
350 | 1-149} -170 || 350 | 1-153) 184 || 784 |-307 | -030 || 784 | -290 | 028 
406 | 1-420) -245 || 406 | 1-435) +265 || 840 | 343 896 | 355 | -045 
434 | 1-570) -295 || 462 | 1-764| 370 || 896 |broke 952 | -390 
448 | 1-654 469 |broke 950 |broke 
462 |broke 
.*. Ultimate deflec-|| .», Ultimate deflec-|| .«. Ultimate deflec-|| .-. Ultimate deflec- 
tion = 1-738, tion = 1-808. tion = *375. tion = *407. 
Broke 3 of an inch|| Broke 4 an inch|| Broke at the cen-|) Broke 3 of an inch 
from the centre. || from the centre; | tre. from the centre, 
In this iron the crystallization is more perfect, when contrasted with the cold blast 
from the same ore; it presents larger granules than it, accompanied with more lus- 
tre over the whole surface of the fracture. It is a free, kindly-working iron; easily 
cut with the chisel, and files with a sense of adhesion to that instrument. 
Results reduced to those of bars 1:00 inch square. 
Modulus of ; 3 Product b 
Specific | elasticity in Breaking | Ultimate | X d, or 
i ight |deflection| power of 
gravity. | lbs. per weig ver 
square inch.|. (°)+ (d). reaeing 
Experiment Ist, bar 4 ft.]| 6970 2. F ; 
6in. between supports cveee 6-956 } TATOO |: EG ge ig 
Experiment 2nd, bar 4 ft. aH : : : 
Goa between ctppertss. f| 6977 | 19835000 | 4156 | 1911 | 7942 
Mean...| 6-968 | 14322500 | 409-2 1-882 
Experiment 3rd, bar 2 ft. 835°5 392 
8 in, between supports... f [|e 
Experiment 4th, bar 2 ft. 862°3 434 
3 in. between supports... fen a ee 
Meatiies|ecscsssesssslersceseoseeeees| 848°9 “413 
RR ET 
