Found briefly, but, I trust, reasonably satisfactory and encouraging to all. With equal unanimity, the gun-cotton rockets. Wind and weather, 331; Fortin's, _326_; meaning of, 237; principal, 238. Foci, conjugate, 262. Force, lines of, 116. Forces, component, 345. Free wheel, _440_. Furring-up of pipes, or stops. [Illustration: FIG. 190.--The Laxey water-wheel, Isle of Wight. From these conversations, which.