Dictionnaire mécanique américain de Knight : une description des outils, instruments, machines, procédés et ingénierie, histoire des inventions, vocabulaire technologique général ; Et le digérer des appareils mécaniques en science et dans les arts . nommer et le labourer avec mortier, sur lequel a appelé Le Pouce-Capc et célébré dans un ditty par Ptolemys nom a été inscrit. En cours de création de Time Southey, a été érigée 1S07-10. La roche est au large du mortier mis à l'échelle Oh et a apporté le nom de la Frith de Forth, et est 230 x 427 pieds, onze milles architecte à la surface. La tour Xhe tomba A. D. 13ii:3Autre ancie

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Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . name beneath and tilled it with mortar, upon which called the Inch-Capc and celebrated in a ditty by Ptolemys name was inscribed. In process of time Southey, was erected 1S07-10. The rock is off the the mortar scaled oH and brought the name of the Frith of Forth, and is 230 x 427 feet, eleven miles architect to the surface. Xhe tower fell A. D. 13ii:3Other ancient lighthou.ses were situated at Mes-sina, Ostea, Kavenna, Puteoli, Caprea, Khodes, Do-ver, the Thracian Bosphorus. The light in eachwas obtaine<l by fires. During the Sa.on rule in England, beacons weieerected to direct navigation, and personswere appoint-ed to keep them iu order. The expense was defrayedby the county. Pitch boxes were made use of inthe reign of Edward III. The Eddystone lighthouse (i) is erected upon arock of that nanieten miles from shore, off Plymouth, England. A lighthouse w;is built on the spot, 1696 - 99, by Winstanley, who perished with it ina storm, November 27, 1703. Rebuilt of wood in a Fig. 2947.. a, the EiTvptiau Pthah. 6, the Ejdystone Lighthou.se. c, the Bell Rock Lishthoiise.rf, the Skerrjvore Lighthouse. fiom land. The surface is bare at low water. Thelighthouse is built in the manner of the Eddystone, the stones being joggled together, and the layersdoweled together by tree-nails. Holes were boredin a circle of 36 feet diameter, and pieces of timber50 feet in length inserted to sup])ort a temporaryshelter for 30 workmen during the summer months.The sti-uctnre is 42 feet diameter at the base, 13 feetat the top. The lower solid portion is 30 feet; totalliight, 115. The door is 30 feet from tlie base. The lantern is 12 feet in diameter, 15 feet high, has a balcony around it, is framed of cast-iron, andhas plate-glass sides, the jianes being 27 x

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