EARLIEST SIGNS OF MAN'S APPEARANCE IN EUROPE—CONTINUED.

   Signs of extinct Glaciers in Wales.
   Great Submergence of Wales during the Glacial Period proved by
      Marine Shells.
   Still greater Depression inferred from Stratified Drift.
   Scarcity of Organic Remains in Glacial Formations.
   Signs of extinct Glaciers in England.
   Ice Action in Ireland.
   Maps illustrating successive Revolutions in Physical Geography
      during the Pleistocene Period.
   Southernmost Extent of Erratics in England.
   Successive Periods of Junction and Separation of England, Ireland,
      and the Continent.
   Time required for these Changes.
   Probable Causes of the Upheaval and Subsidence of the Earth's Crust.
   Antiquity of Man considered in relation to the Age of the existing
      Fauna and Flora.