1. Added “near Bristol” after “146. Clifton Suspension Bridge,” on p. [xii].
  2. Added “PLATE IX.” to caption of illustration facing p. [144].
  3. Added “PLATE XI.” to caption of illustration facing p. [168].
  4. Switched the captions for “Fig. [99].” facing p. [210] with the caption for “Fig. [102]” facing p. [206]. The captions were out of order and did not agree with the content of the illustration.
  5. Changed “a calibre of 4,724 in.” to “a calibre of 4·724 in.” on p. [ #208]. Otherwise the muzzle opening would be larger than its length. Confirmed online.
  6. Changed “the two rows in” to “the two rows is” on p. [332].
  7. Added “O T” after “P P, or” on p. [398].
  8. Added “PLATE XVII.” to caption of illustration facing p. [422].
  9. Changed “screw motion to finally” to “screw motion to finely” on p. [433].
  10. Changed “which strangely makes it” to “which strangely makes its” on p. [491].
  11. Changed “Duke of Wellington’s statute” to “Duke of Wellington’s statue” on p. [550].
  12. Changed “-” to “·-” for the Morse Code for A in the table on p. [565] to agree with the text that follows.
  13. Changed “vegetation which spontaneously makes it” to “vegetation which spontaneously makes its” on p. [678].
  14. Added “INDEX” header on p. [813].
  15. Silently corrected typographical errors.
  16. Retained anachronistic and non-standard spellings as printed.