STRATIFIED ROCKS OF ORGANIC ORIGIN--ILLUSTRATIONS FROM
VEGETABLE LIFE.
Origin of Coal--Evident Traces of Plants and Trees in Coal
Mines--Coal made up of the same Elements as Wood--Beds of
Coal found resting upon Clay in which are preserved the Roots
of Trees--Insensible Transition from Wood to Coal--Forest-covered
Swamps--Accumulations of Drift Wood in Lakes and
Estuaries--Peat Bogs--Beds of Lignite--Seams of pure Coal
with half Carbonized Trees, some lying prostrate, some standing
erect--Summary of the Argument hitherto pursued--Objection
to this Argument from the Omnipotence of God--Answer to
the Objection, 141