258 Scientific Proceedings, Royal Dublin Society. 
further north there does, however, appear to be evidences of the 
land having been lower than at present. There is the raised 
beach, or rather shell-bank, on the shores of Morecambe Bay, a 
few feet above high water; and at St. Bees, further north, I found 
in 1872 what I consider Post-Glacial deposits, corresponding to 
the Formby and Leasowe Marine Beds, at an elevation of from 
eight to nine feet above high water. All these facts point to a 
gradual elevation northwards; and in the estuary of the Tay and 
other Scotch rivers the “links” consist of sand and silts overlying 
peat, containing remains of trees.* Itis, therefore, not improbable 
that this may be the result of one earth movement. If my sup- 
position be correct the raised estuarine deposits of Scotland are 
subsequent to the Superior peat-and-forest-bed of the North-West 
of England, and synchronous with the last of the raised beaches 
(containing worked flints) of the east coast of Ireland; and the 
more recent of the marine silts, such as those of Wallasey Pool, 
overlying the Supericr peat-and-forest-bed, are of the same 
age, 
Should these suppositions prove correct it now remains to dis- 
cover if there exist in Ireland the equivalents of the Formby and 
Leasowe Marine Beds, which underlie the Superior peat, and also 
the remains of the land surface upon which I have shown they 
rest. 
If these few observations should induce any of the Irish 
geologists to turn their attention to the subject, I shall be very 
glad, and I am quite sure it is well worth investigating. 
* The Last Geological Changes in Scotland (Jameson), Quarterly Journal of Geo. Soe. 
for August, 1865, pp. 188-190. 
