Graptolites Ludensis, [255].
----------- Murchisoni, [255].
Graptolitidæ, [254].
Grauwacke series, [32].
Gravesend, Kent, [305], [317], [355], [708], [710], [843].
Grays, Essex, [815].
Great Oolite, [28].
Greenland, [632].
Greenock, Lord, researches of, [622].