Beds of Keuper sandstone were first ascertained to exist in this locality by my brother, Mr. John Plant, in 1849; they were then found in the cuttings of a short branch line made to connect the Leicester and Swanington Railway with the Midland Railway. At the time that several short hills on the line were excavated, an opportunity occurred for selecting specimens of the superficial casts and markings, together with the cololitic remains of Annelida , from the thin shaly beds of grey marls and sandstones which were abundantly exposed to view; thus a large collection was got together, and specimens were distributed to the museums of the metropolis and to others in the country. A notice of their occurrence was also read at the Meeting of the British Association in that year at Birmingham. The finishing of the railway debarred a satisfactory examination in that direction; but as the strike and dip of the beds had been exposed in the cuttings, it was not difficult to follow them along a low and narrow ridge for about two miles in a north-east direction, and one and a half mile to the west, until lost under a part of the town.