ROADS AND RAILWAYS.—The principal line of road crossing this county is the London and Holyhead parliamentary mail road, which between Wolverhampton and Shiffnal, runs through Shrewsbury and enters Denbighshire, near Chirk. The traffic on this road has been much diminished since the opening of the railways between London and Liverpool. The Chester, Shrewsbury, and Bristol road enters near Whitchurch, and runs southward by Shrewsbury, Church Stretton, and Ludlow, into Herefordshire. A branch leads from Ludlow to Bishop’s Castle and Montgomery. Mail and other roads run between Shrewsbury and Bridgnorth, Ludlow, and Birmingham, across the Clee Hills, Ludlow, Wenlock, and Coalbrook-dale, and Ludlow and Bridgnorth. There are also various other communications between Newport, Drayton, and Wellington, &c. The principal railroads are the Shrewsbury and Chester, the Shrewsbury and Birmingham, and the Shropshire Union. The former on leaving the station at Shrewsbury crosses the Castle Foregate by a cast iron bridge, and proceeding by Leaton Heath, Baschurch, and Whittington, passes on to Gabowen, where there is a short branch to Oswestry, having ten trains running daily. The trunk line then proceeds to Preesgwene, where there is a station, and shortly after passes into the county of Denbigh, and on to Chester. The Shrewsbury and Birmingham and the Stafford branch of the Shropshire union railways have a line formed by the joint companies, extending from Shrewsbury to a little beyond Wellington, where one branches off to Shiffnal and Wolverhampton, and the other to Newport, and from thence to Stafford. An act of parliament has been obtained for a railway from Shrewsbury to Hereford, which will open a communication with the southern parts of the county of Shropshire. The works between Shrewsbury and Ludlow are in a rapid state of progress, and the line to the latter place is expected to be open for traffic in December, 1851. The length of this railway will be fifty miles, and the estimated cost £354,822. The line from Ludlow to Hereford is expected to be completed in 1852. It is to Shropshire, and some of its intelligent and enterprising natives that the all absorbing system of railways, which now intersect Great Britain, and cover its surface like net-work, owes its discovery and establishment. It was adopted in the year 1767, by that celebrated firm of iron masters, the Coalbrook-dale Company, who hit upon the expedient of laying the pig iron upon the wood rails throughout their extensive works, bearing in mind that in the event of a rise in the price of iron, the rails could easily be taken up and vended as pig iron. Thus, to this somewhat accidental appropriation of iron, and the facilities it rendered to the easy and safe carriage of heavy materials, coupled with the important discovery of steam power, and the general improvement in engineering incident to railroad travelling, this