On page 31, "XVI.--" was added in the chapter title.
On page 31, "by" was replaced with "fly".
On page 34, "opperations" was replaced with "operations".
On page 35, "meahanism" was replaced with "mechanism".
On page 36, the "lb bar symbol" (called the "pound sign") was replaced
with [lb]. Sometimes, through the book, the author used the "lb bar
symbol" and other times the author used "lbs."
On page 39, "aeorastation" was replaced with "aerostation".
On page 44, "horrizontally" was replaced with "horizontally".
On page 45, "air-ship" was replaced with "air ship".
On page 49, "anihilated" was replaced with "annihilated".
End of Project Gutenberg's Lecture on Artificial Flight, by Wm. G. Krueger