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To its summit, within two miles of Durham, it attains an elevation, from high water, of 278 feet; from thence, to the River Wear, there is a fall of 163 feet; thence, to Durham, it is level. At the distance of five miles and three quarters from the commencement of the last-mentioned branch, the Chilton Branch leaves it, at an elevation of 262 feet, and rises 40 feet; upon the same level, at the distance of about seven miles and a half, the Sherburn and Byer's Green Branches proceed from it; the first of which rises 72 feet, and the latter 115 feet.

On the line of the City of Durham Branch, where it crosses the River Wear, a cast iron bridge is intended, of one arch, of 100 feet span, and 35 feet above the surface of the river.

The estimates, under the last act, for this railway and branches, were made by Mr. Leather, of Leeds, civil engineer, in February, 1829, and are as follow:-

ESTIMATES FOR THE RAILWAY AND BRANCHES.
The company are empowered to raise the sum of £100,000, in addition to the sums of £100,000 and £60,000, authorized in time preceding act; which two latter sums may be borrowed on