Transcriber modified the original cover and added a map to it, taken from the original book. The modifications as well as the original are in the Public Domain.

Punctuation and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed.

The original text was typed, not printed. Consequently, there were more typographical errors than would normally be found in a book, and Transcribers corrected most of them without noting the individual corrections here.

Ambiguous hyphens at the ends of lines were retained; occurrences of inconsistent hyphenation have not been changed.

Transcriber segmented the map at the end of the book into three larger parts for readability, in addition to retaining an image of the original.

“Maratime” was printed that way, twice; “Maritime” did not occur in this book.

Page 3: “concensus” was printed that way.

Page 15: “built on the lock canal” was printed as “built on the sea-level canal”, but “sea-level” was crossed out by hand and replaced by what appears to be “Loc”. Given the context and name of the chapter, Transcribers decided it was intended to be “lock”.