ON THE ACTION OF AIR AND WATER UPON IRON. 287 
: immersed in clear Sea Water at Temperature from 
25° Fahr. 
ailway Company’s Baths at Salt Hill, near Kingstown. Depth of water 
ly constant at 115° Fahr. Sunk on the 6th of August, 1838, at 4 o’clock p.m. 
of the Baths, on the Ist of December, 1838, at same hour, having thus been 
Scotch Cast Iron. 
| 
6. 4s 8. 9. 10. 11. 12 13. 
= Me bal ce of — loss ae of — 2 Spies 
| Dimensions of eight of | Specimen fe eight per eight | 2233 | Character of 
Specimen. Specimen aon ‘ Corrosion pavare inch aes to SS5 Corronion® 
apa en 117 days. Surfied. pag SF 3 
an.” in. 
x5xil 43167 | 43149 18 0:257 803 0- Uniform. 
x5~x1l 44109 | 43939 170 2:43 759 0- Local. 
Welsh Cast Iron. 
x5xil 42320 | 42239 81 1-15 +359 0: Uniform. 
x5x1l 43363 | 43239 124 1-77 553 0- | Local. 
staffordshire Cast Iron. 
 5x5~x1 43805 | 43735 70 1:00 +312 0: Local. 
5x5xil 43710 | 43562 148 2:10 “656 0: | Local. 
rish Cast Iron 
5 x 5x1 41805 | 41745 60 0°85 -265 0: | Uniform. 
5x5x1 43651 | 43465 186 2°65 *827 0- | Local. 
fixed or alloyed Cast Irons. 
x5xl 433826 | 438315 11 0-16 “050 0- Tubercular. 
5x5x1 | 42337 | 42941 96 | 137 | -497 | 0 | Local. 
| 5x5x1 41433 | 41341 92 131 409 0- | Local. 
