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acid animal apertures appears Argand burners ascertain augite basalt basin beds Bitter Lakes boat body bottom breccia burner calcareous canal clay coal coal-gas colour compact copper degree deposits diameter distance Ditto Edinburgh effect engine experiments feet flame formation fossil gases greywacke gypsum heat height holes illuminating power inches iron length light lime limestone marl masses means Melazzo miles mineral motion Natural History nearly needle Neptunian Nile º º º º º observed oil-gas olivine ºn tº ºº ºr ºf ºths oxide paddles paintings photometer plate porphyry present produced proportion quantity remark rocks sand sandstone seen shells shew ship Sicily side ſº species specific gravity specimens sponge Spongia stone substance sulphur surface temperature Ther tion tº º tºº vapour varnish vases veins velocity vessels wheel wind
الصفحة 318 - An Inquiry into the means which have been taken to preserve the British Navy from the earliest period to the Present Time, particularly from that species of decay now denominated Dry Rot (1821).
الصفحة 85 - I have also reason to believe that the power of the STEAM ENGINE may be applied to work the WHEELS, so as to give them a quicker motion, and consequently, to increase that of the ship. In the course of this summer, I intend to make the experiment; and the result, if favourable, shall be communicated to the public.
الصفحة 351 - These clutches are simultaneously acted upon by connecting levers and springs, and which, according as they are forced to the right or left, will enable the carriage to be moved forward or backward. To the fore naves are fixed two cylindrical metal rings, round which are two friction bands, to be tightened by a lever convenient for the foot of the conductor, and which will readily retard or stop the coach when descending hills. K is the seat of the conductor, with the...
الصفحة 386 - MIGRATION OF BIRDS. Dr. Schinz, Secretary to the Provincial Society of Zurich, has endeavoured to discover the laws according to which the birds of Europe are distributed over our continent. The country in which the bird produces its.- young is considered as its proper one. The nearer we approach the poles, the more do we find peculiar or stationary birds, and the fewer .are the foreign species which make their appearance. Greenland has not a single bird of passage. Iceland has only one, which remains...
الصفحة 351 - ... of the road. To ascend steep parts of the road, and particularly when the carriage is used on railways, or to drag another behind it, greater friction will be required on the road than the two hind wheels will give, and there is therefore a contrivance to turn all the four wheels. This is done by...
الصفحة 90 - Millar's expectations fully, and afforded great pleasure to the spectators. The success of this experiment is no small accession to the public. Its utility in canals, and all inland navigation, points it out to be of the greatest advantage, not only to this island, but to many other nations in the world. The engine used is Mr Symington's patent engine. — Scots Mag. LIKE DRAWS TO LIKE. An idiot boy, or
الصفحة 89 - Dalswinton's piece of water at that place. That gentleman's improvements in naval affairs are well known to the public. For some time past his attention has been turned to the application of the steam-engine to the purposes of navigation. He has now accomplished, and evidently shown to the world, the practicability of this, by executing it upon a small scale. A vessel, twenty-five feet long and seven broad, was, on the above date, driven with two wheels by a small engine.
الصفحة 102 - ... around. The beauty and novelty of such a scene in the animal kingdom, long arrested my attention, but, after twenty-five minutes of constant observation^ I was obliged to withdraw my eye from fatigue, without having seen the torrent for one instant change its direction, or diminish, in the slightest degree, the rapidity of its course.
الصفحة 102 - On moving the watch-glass, so as to bring one of the apertures on the side of the Sponge fully into view, I beheld, for the first time, the splendid spectacle of this living fountain vomiting forth from a circular cavity an impetuous torrent of liquid matter, and hurling along, in rapid succession, opaque masses, which it strewed everywhere around. The beauty and novelty of such a scene in the animal kingdom long arrested my attention ; but after twenty-five minutes of constant observation, I was...