49 
escarpment to the West, and the great ISTorth road from 
Bawtry to Doncaster runs nearly on the edge of it, but 
they tbin away to the East at Cantley, so that tlie lowest 
bed emerges from beneath, and forms the basis of a 
considerable tract of country between the former place 
and Armthorp. 
The section at Cantley consists of: 
1. Boulders, gravel, and sand, forty to fifty feet. 2. 
Yellow Clay and Boulders, twenty feet (probably.) 
Another range of diluvium commences near Balby, 
one mile and a half West of Doncaster, and ranges in 
an East and West direction down by Wheatley to Sandal 
and Hatfield ; the breadth of this mass is from two to 
three miles. 
The section in Doncaster town is : 
1. Sand and Gravel, three feet. 2. Sand, eighteen 
feet. 3. Gravel rough, part Boulders, fifteen feet. 4. 
Yellow Clay and Boulders, three feet. This arrange- 
ment of the upper beds is purely local, for the section 
varies even in the same quarry. 
The lowest bed of Yellow Clay and Gravel in the 
Doncaster section has a very extensive range, and is 
found at Cantley under the upper gravel beds, and 
extends on the surface from that place, two miles to 
Armthorp, and three miles also in a North and South 
direction, being the basis of a tract of wet land. The 
eighteen feet Sand forms the excellent soil of Doncaster 
Field. 
Of the origin of the beds I hope to speak this 
evening in another paper. The productiveness of 
these upper gravel beds very much depends upon 
the seasons. In hot and dry summers they guffer 
c 
