ON THE ACTION OF AIR AND WATER UPON IRON. 81 
Box a. No. 1. Class No. 4. Scotch Cast Irons. 

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10. 11. 







3 3 a 2 a # zy ea ~~ : Om 8 
ag go. | 882 |o8|/52,\S28/52)5./8 
aa Dimensions ae ma : 2B 3 2 8 Ses 53 s3 C3 vars Hid 
° = B weeklong ‘ & 
or Specimen. 25 2 BF 2S 6 ga se : ze 58 rs 2 Corrosion. 
A ss Mon laso| 6n0] onS| & 5 SD 
a Pole seer rt ho ee 
in. in. in. 
@2615%5x1 |43961| 43505 |456| 6-514 | 0734/0: |1-526] 0 | Uniform Plumb. 
#27155 x25 | 11514| 11117 | 397| 7-218 | 0-814] 0° 2-924] 0- | Local Plumbago. 
@28)5 5x1 | 43276 | 42856 | 420) 6:000 | 0-676|0- 1-798 | 0: | Local Plumbago. 
w 29|\5%5 x25 | 11527 | 11193 | 334 | 6-072 | 0-685|0- |3:300} 0: | Local Plumbago, 
# 30\5x5x1 | 43085 | 42604 | 481 | 6871 | 0:777|0- —|2-565 | O° | Local Plumbago. 
@ 31\5 x5 x25 | 11671] 11395 |276| 5-018 | 0:566|0- 4-107} O- | Uniform Plumb. 
a@32|5x5x1 | 48834 | 42975 | 859 | 5-128 | 0°578)0- |3:000} O° | Uniform. 
«@ 33|5x5 x25 | 11404] 11064 |340| 6-181 | 0°697|0- |6:072| 0° | Local Plumbago. 
@84|5x5xX1 | 43558 | 43279 |279| 3-985 | 0:-449/0- 2-632) 0 | Uniform. 
#35155 x25 | 11275 | 10910 | 365 | 6636 | 0-748|0- 4-852) 0- | Local Plumbago. 
@36|5x5xX1 | 42172) 41844 | 328] 4-685.| 0:528|0- {2-394} 0- | Uniform. 
@ 37|5 x5 X25 | 11265 | 10913 | 352 | 6-400 | 0:717|0- 5-107} O° | Local Plumbago. 
2 38}5x5 X25 |11238| 10747 |491| 8-927 | 1:007|0- |6:041) 0° | Local Plumbago. 
| @39|5x5x1 |43700| 48337 | 3635-186 | 0:585|0- 0-399) O- | Uniform. 
| @40|5 x5 x25 | 11147 | 10676 | 471 | 8563 | 0-966|0- 7-143] 0: | Local Plumbago, 
|@41|5x5x1 | 42574 | 42275 | 299| 4-271 | 0-481/0- 0-902) 0° | Uniform. 
w 42)5x5 X25 | 11701 | 11204] 497 | 9-036 | 1:019|0- |3:983| 0: | Local Plumbago. 
#43|5x5xX1 | 44269 | 43870 | 399 |5-700 | 0643 |0- —|1-627| 0° | Local pitted. 
@ 4415525 | 10916 | 10479 | 437 | 7-945 | 0:896/0- 17-030) 0- | Local Plumbago. 
@45|/5x5X1 | 43184] 42625 | 559 | 7-985 | 0-900 | 1-311)0- 0: | Uniform. 
| @ 46|5 x5 X25 | 11343 | 10830 | 513 | 9327 | 1:052)0- {5-089 | O- | Local Plumbago. 
@47\5x5xX1 | 42575 | 42120 | 455 | 6-500 | 0-733 | 0-426)/0- 0: | Local pitted. 
| @ 48|5%5x25 | 11449 | 10995 | 454 | 8-254 | 0:931)0- |3-687| 0 | Local Plumbago. 
@49|)5x5xX1 | 43061 | 427386 | 325 | 4-642 | 0523/0 3-056) 0: | Local pitted. 
| @50|5x5 x25 | 11754] 11285 | 469| 8-527 | 0:962|0- {4-852} O- | Local Plumbago. 
--|@51|5xX5xX1 | 43911 | 48639 | 272 | 3-885 | 0-438}0- {1-196 | O- | Uniform. 
@52\5xX5x1 | 43781 | 43277 | 504| 7-200 | 0:812)0- {1-534} 0: | Local pitted. 
@ 5315x525 | 11381 | 10942 | 439 | 7-981 | 0:900|0- [4-431 | O- | Local Plumbago. 
@54)5x5x1 | 43429 | 43039 | 390| 5-571 | 0-628)0- {0-795 |11-0| Local pitted. 
@55|5x%5xX25 | 11380) 10953 | 427 | 7-763 | 0°875|0-  |5:366| 1-0| Local Plumbago. 
@56/5x5x1_ | 43026 | 42598 | 428 | 6114 | 0-689 | 3-274)0- 0- | Uniform P. 
@ 57|5x5x25 | 11025 | 10652 | 373 | 6-781 | 0:765)0- = |8-175) O- | Uniform P. 

Box a. No. 1. Class No. 5. The Standard Bar of Wrought Iron. 
0.4 
Box a. No.1. Class No. 6. Scotch Cast Iron. Chilled. 

1058 Fibre exposed with 
metallic lustre. 
23582 5°951 

5x3 x°'875 | 23972 


390 | 8863 

1:000 | 0° 






| «59 
cd a 60 
5x5x<1 
5x5xl1 
42042 
43034 
41578 
42525 
464 
509 
6:628 
7271 
0-747 
0-820 
0: 
0 
2-606 
3°806 
0- 
0- 
Uniform. 
Local pitted. 











Box a. No. 1. Class No. 7. Welsh Cast Iron. Chilled. 
a 61 
a 62 
5x5x1 
5x5x1 
41538 
43251 
41126 
42619 
412 
632 
5°885 
9-028 
0°663 
1:018 
0- 
0: 
3'339 
3:497 
0: 
0- 
Uniform P. 
Local pitted. 











