. Annals of some remarkable aërial and alpine voyages, including those of the author : to which are added, observations on the partial deafness to which aerial and mountain travellers are liable, and an essay on the flight and migration of birds, the whole being intended as supplementary to "Researches about atmospheric phenomena" . yopposites to each other; the balloon going invariably withthe wind alone, and setting mechanism at defiance; thesteamer being propelled mechanically without the aid ofwind or tide, and bidding defiance both to the gale andto the stream. The ship comes between the
. Annals of some remarkable aërial and alpine voyages, including those of the author : to which are added, observations on the partial deafness to which aerial and mountain travellers are liable, and an essay on the flight and migration of birds, the whole being intended as supplementary to "Researches about atmospheric phenomena" . yopposites to each other; the balloon going invariably withthe wind alone, and setting mechanism at defiance; thesteamer being propelled mechanically without the aid ofwind or tide, and bidding defiance both to the gale andto the stream. The ship comes between the two, and isnavigated by sails as well as a rudder, by which means thedirection and resistance of the waters below the deck, andof the wind on the canvas above, are made to resolvethemselves into the desired force and direction. But if any person will make the experiment, let himgo up when a steamer is going against even a gentle wind,and he will soon find the balloon resist every effort of theoars or wings, and sag rapidly to leeward. The adjoining figure will assist the reader to com-prehend the subject: besides the above objection, if weobserve a balloon in the air sinking down into the sea, weshall almost always observe, by the bulge and slight inclinati onthat it has a different current from the vessels in the water.
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Keywords: ., bookcentury1800, bookid39002011210623medyaleed, booksubjectbirds
