40, boa) won oo) REPORT—1843. 
Second Course of Experiments. 
‘TasLe V.—Box 6. No. 4. containing Specimens of Cast and Wrought Iron, 
&c. immersed in foul River Water. 
Sunk and moored a second time, in mid-stream of the river Liffey at Dublin, opposite the 
junction of the Poddle river therewith, on the 13th day of January, 1840, at one o’clock 
P.M., on a bottom of putrid mud. Weighed again and removed, January 14, 1842, at same 
hour. Immersed 732 days. 
Bex 6. No. 4. Class No. 1. Scotch Cast Iron. 
a re ee 
2. 





































1. 3 4 5 6. 7 8. 9 10. 1l 
3 a8 |e sisline 5 
Bs 82 | 888 is8|/3../2.8/3./ 3.18 
&.% | Dimensions as a o | ES aos 38 2s gs eg Character 
aS of So | See (2h See | SEE) 23 | 28 [ce of 
% 4 | Specimen. =5 = “8 a cEa cee) 2s | BE a 2 Corrosion 
in. in, in, 
6 1) 5x5x1 | 41145 | 40894 | 251) 3585) 0-404; O- | 2-465) O- |Uniform. 
6 2) 5x5x1 | 42885 | 42626 | 259 3-700} 0:417| O- | 3-915) O- |Local Plumb. deep. 
Box 5. No. 4. Class No. 2. Welsh Cast Iron. 
6 3) 5x51 | 42181 | 42025 | 156| 2:228| 0-251) O- | 2-845) 0. |Uniform. 
6 4| 5x5x1 | 42908 | 42690 | 213 | 3-042| 0:343| O- | 4547) O- |Uniform Plumbago. 
Box &. No. 4. Class No. 3. Staffordshire Cast Iron. 
6 5| 5x51 | 44857| 44703 | 154 | 2-200, 0:°343| 0: | 0549) O- |Pitted. 
6 6| 5x5x1 | 48478 | 43345 | 133} 1-900] 0-214] 0 | 3-036) 0° |Pitted. 
Box 6. No. 4. Class No. 4. Irish Cast Iron. 
6 7| 5x51 | 40305 | 40095 | 210} 3:000| 0338) O- | 4-661) 0- |Uniform. 
6 8| 5x5x1 | 42241 | 42033 | 208 | 2:857| 0321) 0: | 4-706) 0- |Uniform. 
Box 6. No. 4. Class No. 5. Mixed or alloyed Cast Iron. 
6 9|5x5x1 | 44473 | 44296 | 177 | 2-528| 0-285| O- | 3328) 0: |Uniform. 
610) 5x51 | 42147 | 41919 | 228} 3-257 | 0-367| O- | 2:676} O° |Uniform Plumb. 
611) 5x5x1 | 91981 | 41809 | 172 | 2-457 | 0°:277| O- |38:525) O- |Pitted. 
Box 6. No. 4. Class No. 6. Standard Bar of Wrought Iron. 
: Sides smooth, ends 
612 |5x3x°875 24038 23781 215 08 v63s| 0- sou 0° fibrous, straight, 
silvery lustre. 



Box 6. No. 4. Class No. ’7. Gray Cast Iron. Skin removed by Planing. 
6.13 {5x8 x-75| 33674 | 38169 | 505 7-769| 0-876 0 |2-707| 0- | niform Plumb. 
eh ic et i anal Nl cs lhc A ln Nh ec 

