Science whose machine certainty of action you can rely every time of Aeronautics. you have to use it, or will you be content with one whose action is uncontrolled, variable and freakish ? Think what (Price Is. 6d. post free). variability of action means, and count its possible cost someday to… … KINDIvY MENTION " THE AEROPLANE " WHEN CORRESPONDING WITH ADVERTISERS.
Aeronautics -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
