Geology of England and Wales, &c. 209 
prehends the three first orders in the preceding table. 
Those in the Superior Order embrace all above the chalk; 
viz. the Alluvial and Diluvial; the Upper Marine Forma- 
tion; the Fresh Water Formations; the London Clay, and 
the Plastic Clay The Supermedial Order comprehends 
the Chalk; Beds between the chalk and Oolitic Series; the 
Oolitic Series; and the formations between the Lias and coal. 
The Medial Order embraces the Independant Coal Form- 
ation of Werner; viz. the Coal Measures; the Mill- 
occurring occasionally in the coal fields. : 
The mode of description, adopted in this work, is sys- 
tinct view of a formation. 
* 
roceed as proposed, to give a short sketch of © 
€ now 
the English ation as exhibited in the work before us; 
eginning with the SupE RIOR OrDeER. a 
luvial. This formation embraces only those a: 
97 
