[111] For example, King John’s Bridge at Tewkesbury; Barden Bridge and Burnsall Bridge in Wharfedale; the Old Dee Bridge at Chester; Huntingdon, Bridgenorth, Baslow, Froggall, Brecon, and Llangollen. There are many others. [112] This valuable reference was brought to my notice by Mr. H. T. Crofton, an able pontist, who sent me his notes on bridges, asking me to cull from them whatever information my own research had missed. A hobby is the only altruism. [113] _Springing._ The plane of demarcation between the ring and the abutment is called the “springing” of an arch. A “ring” is the compressed arc of materials known as archstones or voussoirs; and the “springing” marks the place where a ring starts out on its upward curve from a pier or from an abutment. [114] The _haunches_ of an arch are those parts that lie midway between the springing and the crown: the crown being the summit of a ring. [115] “The Builder,” November 19, 1892, p. 394. [116] “The Builder,” November 19, 1892, p. 394. [117] If Cæsar’s bones were found they would be sold at Christie’s to a tradesman millionaire. [118] Lord Curzon’s “Persia and the Persian Question,” 1892, Vol. II, pp. 45-6. [119] According to some writers, the earliest known arches of handicraft--pointed, and round, and even elliptical--are Babylonian, but I do not care to be so dogmatic. Dates very often are as elusive as dreams. But the influence of Babylon was, doubtless, very great on the traditions of the building arts; perhaps we find it even in the elliptic vault of Chosroes’ great hall at Selucia-Ctesiphon. This vault, dating from the sixth century A.D., was a forerunner of St. Bénézet’s elliptic arch (p. 81).