A METHOD OF DETERMINING THE MEAN THICKNESS OF THE SEDIMENTARY
ROCKS OF THE GLOBE.
Prevailing Methods defective.—Maximum Thickness of British
Rocks.—Three Elements in the Question.—Professor Huxley
on the Rate of Deposition.—Thickness of Sedimentary Rocks
enormously over-estimated.—Observed Thickness no Measure of
mean Thickness.—Deposition of Sediment principally along
Sea-margin.—Mistaken Inference regarding the Absence of a
Formation.—Immense Antiquity of existing Oceans 360