92 
Yorkshire, near Worksop, and terminating at the same point, 
the river Aire and Calder. I hope therefore, — 
I. To examine the soils, in connection with their Geology, 
over each of the beds subordinate to the magnesian limestone, 
to produce vertical sections of their thickness, &c., and to 
project them upon a map of six inches to the mile. 
II. To inquire what aid may be derived from physiological 
Botany and Chemistry in their cultivation. 
III. To describe the state of agriculture as at present 
existing, and offer some suggestions for its improvement. 
I. The magnesian limestone from near Worksop to the 
river Aire and Calder, consists of four independent beds, 
each varying in agricultural character. The section of the 
whole beds consists of, in the descending series — 
YARDS. 
1. upper, thin-bedded grey limestone 7 to 12 
2. Red marl and gypsum 10 „ 30 
3. Yellow magnesian limestone 50 „ 80 
4. Lower red sandstone of Sedgwick or Ponte- 
fract Rock of Smith 10 „ 25 
1. The Upper Slaty, or Grey Thin-bedded Limestone^ first 
commences at Carlton, near Worksop, and from thence 
ranges north by Oldcoats, where it is now dug for agricultural 
purposes, from thence it passes to Tickhill and Wadworth, 
where it is cut asunder by a considerable fault, and then forms 
a narrow zone of productive land by Loversall, Balby, to Hex- 
thorpe, near Doncaster ; it afterwards passes over the River 
Don to Cusworth Park. Between Hexthorpe and this latter 
place it has been denuded to a considerable extent, and the 
fertile grass lands between these two places are of alluvial 
origin, and must on no account be classed among the lime- 
stone soils. From Cusworth, it extends to the east of Marr, 
* See Map and Vertical Section. 
