NAVIGATION n.
Ships in general. [Poetic] Shak. Aërial navigation, the act or art of sailing or floating in the air, as by means of ballons; aëronautic. -- Inland navigation, Internal navigation, navigation on rivers, inland lakes, etc.
PRECIPITATE n.
te may fall to the bottom (whence the name), may be diffused through the solution, or may float at or near the surface. Red precipitate (Old. Chem), mercuric oxide (HgO) a heavy red crystalline powder obtained by heating mercuric nitrate, or by heating mercury in the air. Prepared in the latter manner, it was the preci…