48 
Northwards to the river Aire and Calder, is about twenty 
miles in length and five or six broad, and situated upon 
the New Red Sandstone."*^ The Western boundary of 
the great plain of New Red Sandstone is accurately laid 
down by Smith in his county maps, and also parts of it 
through Yorkshire by Professor Sedgwick, in the third 
volume of the Geological Transactions, and over the 
district now described, it commences East of Wad worth, 
passes near Hexthorp, thence by Cusworth, Carcroft, 
Owston, Norton, Womersley, to Knottingley, the line 
of demarcation being easily visible throughout its whole 
course between it and the Upper Slaty Limestone. The 
Geology of this district is not so simple as at first might 
be anticipated owing to the occurrence, over various 
parts, of diluvium or beds of gravel, boulders, and sand, 
of considerable thickness, which are superincumbent to 
the true beds of the New Red Sandstone. The latter 
also does not here consist of Red Sand, but principally 
of thick argillaceous beds, with the intervention of thin 
sand beds: the whole of these, however, are disposed 
with great regularity. 
The soils on the South side of Doncaster (the low 
Carrs East of Wadworth and at Bessecar excepted) are 
situated upon Diluvium, which lies in very irregular 
masses. 
There is one range of gravel bedsf extending from 
Doncaster race course to Rossington bridge, from two 
to three miles in breadth ; these beds form a slight 
• At the end of the paper will be found a vertical section of the 
beds of this district, which passes over the Estates of Mr. Childers, of 
Cantley, Sir W. B. Cooke, Wheatley, Mr. P. D. Cooke, Owston, Mr. 
Yarborough, Camps Mount, Lord Hawke, Womersley, and Sir Samuel 
Crompton at Whitley and Kellington. 
t See the Section and Map. 
