changes near its close--Description of Table Mountain--Results
of the discoveries there--The Calaveras skull--Other relics--
Discussion of the question--Early Californians Neolithic--
Explanation of this--Date of the Pliocene Age--Other discoveries
bearing on the Antiquity of man--Dr. Koch's discovery--
Discoveries in the Loess of Nebraska--In Greene County, Ill.--
In Georgia--Difficulties in detecting a Paleolithic Age in this
country--Dr. Abbott's discoveries--Paleolithic Implements of the
Delaware--Age of the deposits--The race of Paleolithic man--
Ancestors of the Eskimos--Comparison of Paleolithic Age in this
country with that in Europe--Eskimos one of the oldest races in
the World.


Chapter X.
THE MOUND BUILDERS.

Meaning of "Mound Builders"--Location of Mound Building tribes--
All Mounds not the work of men--Altar Mounds--Objects found on
the Altars--Altar Mounds possibly burial Mounds--Burial
Mounds--Mounds not the only Cemeteries of these tribes--Terraced
Mounds--Cahokia Mound--Historical notice of a group of Mounds--
The Etowal group--Signal Mounds--Effigy Mounds--How they
represented diiterent animals--Explanation of the Effigy Mounds
--Effigy Mounds in other localities--Inclosures of the Scioto
Valley--At Newark, Ohio--At Marietta, Ohio--Graded Ways--
Fortified Inclosures--Ft. Ancient, Ohio--Inclosures of Northern
Ohio--Works of unknown import--Ancient Canals in Missouri--
Implements and Weapons of Stone--Their knowledge of Copper--
Ancient mining--Ornamental pipes--Their knowledge of pottery--