Scotch Cast Irons. 
ey ee 5 ei a le we 
7 i. Re ae) 10. Ir. | 2: 13. 
Weight of Loss of Lo Ss 
ga Dimensions of Weight of Specimen iN aie Weight Weight = 8 z Character of 
a Specimen. Specimen | after 387 Corrosion | Per square referred to Bs 5 Corrosion- 
" in Grains, Lined in 347 days,| inch of | Standard oF 2 
4 posure, Surface. Bar. Ss is 
; 4 in. in. in. 
ox 5 xX 1 44309 | 43961 348 4:97 “469 0: | Uniform P. 
5x5 xX -25/ 11885 | 11514 371 6-74 636 0: | Uniform P. 
mox5x 1 43624 | 43276 348 4:97 469 O- | Local. 
15x5x-25| 11885 | 11527 358 651 ‘614 O- | Local. 
|5xK5x1 43519 | 43085 434 6:20 “585 0: Tubercular. | 
155 x -25| 12043 | 11671 372 6-76 636 0- | Tubercular. | 
15x5x1 43734 | 43334 400 5°71 +539 0: Uniform P. | 
|}5x5 xX +25) 11918 | 11404 514 9:34 “881 0 Uniform. | 
5x5x1 43890 | 43558 302 4-74 “447 0: Uniform. 
15x 5 X-25) 117385 | 11275 460 8:36 “789 0: Uniform. 
5xXx5xX1 42513 | 42172 341 4:87 459 0: | Local. 
5X5 X -25) 11732 | 11265 467 8-49 801 0: | Local pitted. 
| 5X 5 X -25} 11830 | 11238 592 10°76 1-015 0: | Uniform. 
15x*5x1 43920 | 43700 220 3°14 -296 0- | Uniform. 
| 5X5 x -25| 11789 | 11147 | 642 | 11-67 | 1-101 | 0 | Local. 
mo x 5 xX 1 42795 | 42574 221 3:16 298 0- Local. 
5 x 5 X -25| 12183 | 11701 482 8-76 +826 0: | Tubercular. 
mo5x5x1 44600 | 44269 331 4-73 ‘446 0: | Tubercular. 
|5X 5 X -25| 11534 | 10916 618 11-23 1:059 0: | Uniform P. 
}5x5x1 43388 | 43184 204 2-91 275 0: | Uniform P. 
}5X5 X 25] 11894 | 11343 551 10-02 945 0: | Tubercular. 
| 5X5x1 42786 2575 211 3-01 284 0: Tubercular. 
}5 xX 5 X -25| 11892 | 11449 443 8-05 759 0- Uniform P. 
| aX5xX1 43447 | 43061 385 5°51 520 0: Uniform P. 
{5X5 X -25| 12267 | 11754 515 9:36 883 0: | Uniform P. 
}d9x5Xx1 44139 | 43911 228 3°25 +307 0- | Uniform. 
|5xX5X1 44155 | 43781 374 5:34 504 0- | Local pitted. 
(5X5 X +25) 11857 | 1138] 476 8-65 816 0: | Local. 
15X5X1 | 43691 | 43429 262 3°74 353 13:0 | Tubercular. 
19 X5 xX :25) 11901 11880 521 9:47 893 2-0 | Tubercular. 
mx 5 xX 1 43225 | 43026 199 2°84 267 0: | Uniform P. 
15 X 5 X25) 11672 | 11025 647 11-76 1-109 0: Uniform P. 
‘The Standard Bar of Wrought Iron. 
; = 
15 : , : iform! 
[5x5 x-875| 24440 | 23972 | 468 | 10-636 | 1-000 | a hme | 
Scotch Cast Iron. Chilled. 
5x5 42470 | 42042 428 611 576 0- | Uniform P. 
9x5 x1 43570 | 430384 536 7:65 722 0: | Tubercular. 
ON THE ACTION OF AIR AND WATER UPON IRON. 
277 
