. Transactions. FiQ. 34.—Same as Fig. 33. Etched 10 sec. with 4 per cent, nitric acid. X 500. 282 NITROGEN IN STEEL AND THE EROSION OF GUNS. Fig. 35.—Akother bar treated as Fig. 33, same composition but broken a200° C. Etched 10 sec. with 4 per cent, nitric acid. X 500.

---

Size: 1676px × 1491px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries