ON THE 
SETEIA AND BELISAMA 
OF 
PTOLEMY. 
BY J. BLACK, M.D., F.GS. 
(Read 2nd April, 1844.) 
A cursory survey of the coasts of Lancashire 
and Cheshire affords many evidences, from their 
topographical features and geological formations, 
that the sea-level, both along them and up their es- 
tuaries, has undergone several important changes. 
Prior to the earliest of our historical records, and 
most probably before the foot of man ever trode 
these shores, it would appear, from the entombed 
turbaria or peat strata, and the submerged forests 
having prostrate trunks as well as their stoles yet 
standing upright, that a great extent of the Fylde 
country and of West Derby, was once covered 
with a primeval forest and a dense surface of vege- 
tation; and that these had a much greater latitude 
towards the sea, than the present extent of the 
land reaches. 
