[26] Sir James Ross—M. Daussy.
[27] Williwaw (Whirl-awa?) of the old sealers and whalers.
[28] Seamen call the light sails, used only in very fine weather, "flying kites."
[29] Herschel.
[30] Dové.
[31] For a barometer of this kind, Admiral Milne has invented self-registering mechanism, that answers well.
[32] A small turnscrew being applied gently to the screw head at the back. This is often necessary, on receiving or first using an aneroid that has long been lying by, or that has been shaken by travelling.
[33] It is a good weather glass—to be suspended on or near the upper deck, for easy reference;—and is unlikely to be injured by mere concussion of air, or vibration of wood, when guns are fired.
[34] Allowing 0,0011 of an inch for each foot.
[35] The manufacture of these useful auxiliary instruments (all French originally) has increased much latterly: and now the patent has expired. They might be so improved so to be worth more than double their present value.