Buch 
A treatise of the properties of arches, and their abutment piers : containing propositions for describing geometrically the catenaria, and the extradosses of all curves, so that their several parts and their piers may equilibrate : also concerning bridges, and the flying buttresses of cathedrals : to which are added, in illustration, sections of Trinity Church, Ely; King's College Chapel, Cambridge; Westminster Abbey; Salisbury, Ely, Lincoln, York, and Peterborough Cathedrals / Samuel Ware
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experience gained in the conftru&ion of the

latter, the former is indebted for much of theadmiration it has occafioned.

Plate 16. is a feCtion of Ely cathedral .Plates 17. and 18. are feCtions of Peter­ borough cathedral : the one is of the newbuilding at the east end, and appears, fromthe ftyle of architecture, to have been ereCtedby the fame architect who ereCted Kings College Chapel , Cambridge . It is worthy ofremark, that the roof of Peterborough cathe­ dral is fimilar in principle to that deferibedto be in the fauxbourg Saint Honore atParis ;'* which, although without tie-beams,is ftated to have no lateral thruft on thewalls on which it refts. It appears, how-ever, that the architect here entertained adifferent opinion, and builders in general willdoubt the pofition.

Plate 19. is a fection of York cathedral.The vaulting over the nave is wood; but itwas the intention of the architect that it

* See Montuclas Recreations in Mathematics and Na-tural Philofophy ; tranflated by Dr. Hutton.

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