Obvious printer's errors have been repaired, other inconsistent spellings have been kept, including inconsistent use of hyphen (e.g. "long-continued" and "long continued") and proper noun (e.g. "Yang-tse-Kiang" and "Yank-tse-Kiang"). Some illustrations were relocated to correspond to their references in the text. End of the Project Gutenberg EBook of Appletons' Popular Science Monthly, August 1899, by Various