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XLIX. — Notice in regard to Marine Shells 
found in the Line of the Ardrossan Canal, 
By Captain Laskey* 
{Read Sth January 1814.) 
On cutting through a bed of sand and clay, which is 
about forty feet above the level of the present bed of the 
Clyde, nearly four miles from Glasgow, and in the line of the 
Ardrossan Canal, a considerable accumulation of marine 
shells was met with. The sands and clays are of the same 
nature with those that form the immediate shores and bot- 
tom of the Clyde, and hence it is probable that they were 
deposited in their present situation by the salt waters of the 
Frith of Clyde. This opinion is further illustrated by his- 
torical tradition, for it is reported that vessels of large size 
were at a former time able to navigate the Clyde beyond 
Rutherglen ; and we are told that the remains of a boat 
were found at the depth of twelve feet, in digging out the 
foundation of the Tontine Inn in Glasgow, which is at pre- 
sent at a considerable distance from the banks of the river. 
The following shells were collected : 
