Forms of Stratification.
Original Horizontality.
Thinning out.
Diagonal Arrangement.
Ripple-mark.


CHAPTER III.

ARRANGEMENT OF FOSSILS IN STRATA-- FRESH-WATER AND MARINE.

Successive Deposition indicated by Fossils.
Limestones formed of Corals and Shells.
Proofs of gradual Increase of Strata derived from Fossils.
Serpula attached to Spatangus.
Wood bored by Teredina.
Tripoli formed of Infusoria.
Chalk derived principally from Organic Bodies.
Distinction of Fresh-water from Marine Formations.
Genera of Fresh-water and Land Shells.
Rules for recognising Marine Testacea.
Gyrogonite and Chara.
Fresh-water Fishes.
Alternation of Marine and Fresh-water Deposits.
Lym-Fiord.


CHAPTER IV.

CONSOLIDATION OF STRATA AND PETRIFACTION OF FOSSILS.