Sketch of the Civil Engineering of North America: Comprising Remarks on the Harbours, River and Lake Navigation, Lighthouses, Steam-navigation, Water-works, Canals, Roads, Railways, Bridges, and Other Works in that CountryJ. Weale, 1838 - 320 Seiten |
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affords Albany Alleghany Mountains Atlantic Ocean Baltimore banks beams boats boiler Boston bottom bridge Buffalo built centre Chesapeake Bay coal coast connected construction cost course deck depth of water distance elevated employed erected Erie Canal extends feet in breadth feet in length feet of water flows formed Gulf of Mexico half harbour height Hollidaysburg Hudson inches in diameter inclined planes iron Island Lake Erie Lake Ontario light lighthouses locks locomotive engines Long Island Sound measures miles in length Mississippi North America Ocean Ohio Orleans paddle-wheels passengers Philadelphia piers Pittsburg placed Plate plying port Portage Railway produced propelled quays Quebec raft Railroad rails railway rapids render reservoirs Rideau Canal rise river road Schuylkill shewn shores six inches St Lawrence steam steam-boats steamers stone stroke surface tide timber tion tons town United upwards vessels wheels whole wood wooden York
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Seite 300 - L.13,980 in repairing lighthouse towers and executing new works. The business of the Lighthouse Establishment, as has already been noticed, is under the immediate control and management of the Government. The official person to whom the duties of this department have been specially assigned, is the Fifth Auditor of the Treasury, who superintends the building and maintenance of the various lighthouses, floating-light ships and buoys on the coast, and the general expenditure connected with the establishment....
Seite 30 - This platform has several shores on its surface, which were brought to bear equally on the vessel's bottom, to prevent her from canting over on being raised out of the water. About thirty men were employed in working this apparatus, who, by the combined power of the lever, wheel and pinion, and screw, succeeded, in the course of half an hour, in raising the platform, loaded with a vessel of 200 tons burden, to the surface of the water, where she remained high and dry, suspended between the wooden...
Seite 256 - I travelled by horse power on the Mohawk and Hudson Railway, from Schenectady to Albany, a distance of sixteen miles, and the journey was performed in sixty-five minutes, being at the astonishing rate of fifteen miles an hour. The car by which I was conveyed carried twelve passengers, and was drawn by two horses which ran stages of five miles.
Seite 117 - American steamboats ply on the smooth surfaces of rivers, sheltered bays, or arms of the sea, exposed neither to waves nor to wind ; whereas most of the steamboats in this country go out to sea, where they encounter as bad weather and as heavy waves as ordinary sailing vessels. The consequence is, that in America a much more slender built, and a more delicate mould, give the requisite strength to their vessels, and thus a much greater speed, which essentially depends upon these two qualities, is...
Seite 216 - The roots of the felled trees are often not removed, and in marshes, where the ground is wet and soft, the trees themselves are cut in lengths of about ten or twelve feet, and laid close to each other across the road, to prevent vehicles from sinking, forming what is called in America a "Corduroy road...
Seite 192 - At the first view, one is struck with the temporary and apparently unfinished state of many of the American works, and is very apt, before inquiring into the subject, to impute to want of ability what turns out, on investigation, to be a judicious and ingenious arrangement to suit the circumstances of a new country, of which the climate is severe, — a country, where stone is scarce, and wood is plentiful, and where manual labor is very expensive.
Seite 97 - ... villages and Spanish forts, and captured some 1,400 Apalachees. Subsequent raids further reduced their numbers. Finally, they were assimilated among the Creeks and other southeastern Indian tribes and lost their tribal identity. APALACHICOLA RIVER, ар-э-lach-ikö'b, is a stream in northwestern Florida.
Seite 303 - This striking appearance is produced by the perpendicular motion of circular shades in front of the reflectors, by which the light is alternately hid and displayed. The double light consists of two lights exhibited from the same tower, the one raised above the other.
Seite 162 - In some of the principal accidents comprised in the foregoing list, the number of killed includes all who did not recover from their wounds. In other cases, the numbers killed are as given in the newspapers of the day, and some of the wounded should perhaps be added. In some few instances no list has been obtained, and possibly in some no loss of life has occurred.