 | Perry Fairfax Nursey - Industrial arts - 1858 - 664 pages
...Nothing can be more beautiful," says Mr. Alau Stevenson, " than an entire appaMechanics' Magazine. ratUB for a fixed light of the first order. It consists...cylinder 6 feet in diameter and 30 inches high; below it aro eix triangular rings of glass, ranged in a cylindrical form j and above, a crown of thirteen Fig.... | |
 | Industrial arts - 1858 - 678 pages
...Soleil " Nothing can bo more beauti Mr. Alan Stevenson, " than an en Sntunhr, March 13, is». ratus for a fixed light of the first order. It consists of a cent ral belt of refractors, forming a hollow cylinder 6 feet in diameter »nd 30 inches high ; below... | |
 | Edward Nugent - 1870 - 304 pages
...of the seven upper tiers of mirrors of the first order as 140 to 87. Nothing can be more beautiful than an entire apparatus for a fixed light of the...central belt of refractors, forming a hollow cylinder 6 Teet in diameter, and 30 inches high ; below it are six triangularly prismatic rings of glass, ranged... | |
 | Edward Henry Knight - Industrial arts - 1876 - 1000 pages
...apparatus for lighthouse illumination. Mr. Alan btevenson remarks : ' Nothing can be more beautiful than an entire apparatus for a fixed light of the...central belt of refractors forming a hollow cylinder six fi-et in diameter and thirty inches high ; below it an- six triangular rings of glass ranged in... | |
 | United States. Light-House Board - Lighthouses - 1893 - 968 pages
...glass, the lamp is placed. "Nothing can be more beautiful," says the groat Scotch light-house engineer, Mr. Alan Stevenson, " than an entire apparatus for a fixed light of the first order. It consiste of a central belt of refractors, forming a hollow cylinder 6 feet in diameter and 30 inches... | |
 | Agriculture - 1912 - 378 pages
...lanterns. Alan Stevenson, the great Scotch lighthouse engineer, said: Nothing can be more beautiful than an entire apparatus for a fixed light of the...belt of refractors, forming a hollow cylinder 6 feet (1.83 meters) in diameter and 30 inches (0.76 meter) high; below it are six triangular rings of glass,... | |
 | George Rockwell Putnam - Lighthouses - 1917 - 404 pages
...distinguished Scotch lighthouse engineer, Alan Stevenson, wrote : — Nothing can be more beautiful than an entire apparatus for a fixed light of the...central belt of refractors, forming a hollow cylinder six feet in diameter and thirty inches high; below it are six triangular rings of glass, ranged in... | |
 | Love Dean - History - 1998 - 316 pages
...almost eight feet high and six feet wide at its focal point. "Nothing can be more beautiful," he said, "than an entire apparatus for a fixed light of the first order." The glass prisms in the lens both refracted and concentrated light rays, the central belt of refractors... | |
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Nothing can be more beautiful," says Mr. Alan Stevenson, " than an entire apparatus for a fixed light of the first order. It consists of a central belt of refractors, forming a hollow cylinder, 6 feet in diameter and 30 inches... 