372 SEVENTH REPORT—1837, 
General Abstract of transverse strengths. 
In the following abstract the transverse strengths of hot 
and cold blast irons to bear pressure and impact will be given, 
together with the ratio of these strengths. 
The comparison will be made between the results of bars 
from the same models, taking the reduced results, where such 
reduction has been made. 
Carron Iron No. 2. 
Strength of Irons. Power to bear impact. 
Ratio of strengths. Z| Ej . Ratio. 
Cola Blast Tron. | Hot Blast tron, [FBEstrenethofColal 8 | ee |The power ot Col 
presented as 1000. || S gt sented as 1000. 
a 492 469 1000 : 953-2 || 686 677-2| 1000 : 987-1 
Q 509 456 1000 : 895-8 || 711| 6493} 1000: 913-2 
= 429 465 1000 : 1083-9 || 493 | 532-0] 1000 : 1079-1 
Bt 449 475 1000 : 1057-9 || 1481 | 1598-7 | 1000 : 1079-4 
3 457 429 1000 : 9387 || 2601 | 2744-2 | 1000 : 1055-0 
Fs 3750 3843 1000 : 1024-8 || 141) 154 1000 : 1092-2 
@ 10957 : .1 || 8891 | 3087 1000: 9103 
J 10362 { a 19 } 10058 1000: 970-1 eee ee | ee Nees 
—-——. 359 | 458-6 | 1000 : 1277-4 
Mean| 1000: 989-1 —=——$ = 
— Mean 1000: 1005-1 
= 266 280 1000 : 1052-6 
28 1050 980 1000 : 933-3 
Beh 315 17 p742 1000: 910-4 
me 677| 728 1000 : 1075-0 
5 
Mean} 1000 : 992:8 
General Mean} 1000 : 990-9 
Devon No. 3 Iron. 
448 504 1000 : 1125-0 || 353-9} 589-2 | 1000 : 1664-8 
448 570 1000 : 1272:3 || 489-5/1761-7 | 1000 : 3598-9 
890 1456 1000 : 1635-9 || 921-8/2747 | 1000 : 2980-0 
1702°3/4935 1000 : 2899-0 
3389 5183 1000 : 1529:3 ——_ 
10133 15422 1000 : 1521-9 Mean 1000: 2785-6 
| === —— eee 
Mean 1000 : 1416-9 
Buffery No. 1 Iron. 
491 464 1000 : 945-0 || 721-19) 721-5} 1000 : 1000-4 
437 437 1000 : 1000:0 |/2341°6 [2163-2] 1000 : 923-8 
462 409 1000 : 885-7 ————- 
3057 2975 1000 : 9731 Mean 1000; 962-1) 
3424 2903 1000: 850-1 —_—_—_ —_— 
Mean 1000: 930-7 
