ON THE SETEIA AND BELISAMA OF PTOLEMY. 369 
From Mr. Greenough’s survey, it seems, that 
“‘ This subterranean forest extends from near 
Penwortham, along the coast, to the Mersey, near 
Liverpool. The inner line of this forest is by 
Longton Moss and Muchhool, crosses the Dou- 
glas, goes by Rufford, in a direct line to Orms- 
kirk, passes on to Litherland and ends in the 
Mersey opposite Everton. The parishes of Pen- 
wortham, Muchhool, Rufford, Altcar, and part of 
Walton stand upon this forest. 
“It takes a line pretty nearly to Crowlands, it 
extends to St. Michaels, then along the canal line 
to Lancaster, including the west of the Lune. It 
goes along the Kendal road to Marton—at Cart- 
mel, it again appears, and extends into Furness 
for three or four miles, and is a little seen between 
Milnthorpe and the Sands.”* 
It further appears, that this once living surface 
of forest trees and cryptogamic plants became 
submerged by some cataclysmal inundation, of 
unknown duration, but having great force, and 
conveying the superficial detritus of more north- 
* Proceedings of the Geological Society, Vol. I., p- 366. 
Greenough’s paper, 1819. Also, Lardner’s Cyclopedia, 
Phillips’ Geology, Vol. I., p- 302. 
