See hereafter.) (**Footnote.

Transactions of the Royal Society of Edinburgh volume 8 1818 page 427 etc.

See also the previous publications of M.Risso Journal des Mines tome 34 etc.) (***Footnote.

Brongniart in Cuvier Ossemens Fossiles; 2nd Edit.

volume 2 page 427.) The geological period indicated by these facts, being probably more recent than the tertiary beds containing nummulites, and generally than the Paris and London strata, accords with the date which has hitherto been assigned to the crag beds of Suffolk, Essex, and Norfolk:* but later observations render doubtful the opinion generally received respecting the age of these remarkable deposits, and a full and satisfactory account of them is still a desideratum in the geology of England.