 | Tobias Smollett - 1787 - 510 pàgines
...rock of lime-Hone. The arch approaches the femi-elliptical form ; but the larger axis of the elipfes, which would be the cord of the arch, is many times longer than the tranfverfe. Though the fides of the bridge are provided in fome parts with a parapet of fixed rocks,... | |
 | 1787 - 512 pàgines
...of limeftorie. The arch approaches the fëmi-elliptical form ; but the larger axis of the elipfis, which would be the cord of the arch, is • many times longer 'than the tranlverfe. Though the fides of the -bridge are provided in fome parts with a parapet of fixed rocks,... | |
 | Jedidiah Morse - 1792 - 522 pàgines
...of lime-flone. The arch approaches the femi-ellipticnl form ; but the larger axis of the tllipfis, which would be the cord of the arch, is many times longer than the tranfverfe. -Though the fides of this bridge arc provided in fome parts with a parapet of fixed rocks,... | |
 | William Winterbotham - 1795 - 558 pàgines
...rock of lime-ftone. The arch approaches the femielliptical form ; but the larger axis of the ellipfis, which would be the cord of the arch, is many times longer than the tranfverfe. Though the fides of this bridge are provided in fome parts with a parapet of fixed rocks,... | |
 | Miscellanea Perthensis - 1801 - 242 pàgines
...of limeftont". The arch approaches the femi-elliptical form ; but the larger axis of the ellipfis, which would be the cord of the arch, is many times longer than the tranfverfe. Though the fides of this bridge are provided in fome parts with a parnpet of fixed rocks,... | |
 | Thomas Jefferson - 1803 - 388 pàgines
...the mass, at the summit of the arch, about 40 feet. A- part of this .thickness is constituted by a coat of earth, which gives growth to many, large tree.s-...solid rock of limestone. ...The arch approaches the serai-elliptical form ; ,but the larger axis of 'the ellipsis, which would be the chord of the arch,... | |
 | Thomas Smith - 1804 - 356 pàgines
...part of this thickness is constituted by a coat of earth, which gives growth to many large tree? ; and the residue, with the hill on both sides, is one solid rock of lime-stone. Thearch approaches the semi elliptical form, but the larger axis of the ellipses, which vould be the... | |
 | Encyclopaedia Perthensis - 1807 - 802 pàgines
...with the hill on both fides, is one fclid rock of lirae-ftone. The arch approaches tie ftmi-elliptical form; but the larger axis of the ellipsis, which would be the cord of the arch, is much louger than the tranfverfe. Though the to of this bridge are provided in fome parts with a parapet... | |
 | Thomas Branagan - 1810 - 346 pàgines
...the arch, above forty feet. A part of this thickness is constituted by a coat of earth, which give's growth to many large trees : the residue, with the...hill on both sides, is one solid rock of limestone. This bridge is in Virginia, in the county of Rockbridge, to which it has given name. The stream passing... | |
 | Edward T W. Polehampton - 1815 - 546 pàgines
...thickness of the mass at the summit of the arch about 40 feet. A part of this thickness is constituted by a coat of earth, which gives growth to many large trees. The residue, with the hill on both sid«s, is solid rock of lime-stone. The arch approaches the semi-elliptical form, but the larger axis... | |
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Its breadth in the middle, is about 60 feet, but more at the ends, and the thickness of the mass at the summit of the arch, about 40 feet. A part of this thickness is constituted by a coat of earth, which gives growth to many large trees. The residue,... 
