ell's "Pre-Adamites," Whitney's "Auriferous Gravels of
California," Marsh's "Address before American Assoc.," 1879.
(58) "Antiquity of Man," p. 234.
(59) "Prehistoric Times," p. 433.
(60) Geikie's "Prehistoric Europe," p. 343.
(61) Dawkins's "Early Man in Britain."
(62) Ibid.
(63) "Prehistoric Europe," p. 318.
(64) Quatrefages's "Hum. Species," p. 150; Geikie's "Prehistoric
Eur.," p. 345.
(65) "Pre-Adamites."
(66) Geikie's "Prehistoric Europe," p. 344.
(67) Ibid.
(68) "Early Man in Britain," p. 92.
(69) Geikie's "Prehistoric Europe," p. 344.
(70) Same as Glacial. See "Outline," p. 41.
(71) "Early Man in Britain," p. 92.
(72) "Prehistoric Europe," p. 345, note 2.

Chapter III

MEN OF THE RIVER DRIFT.<1>

Beginning of the Glacial Age--Inter-glacial Age--Man living in Europe
during this age--Map of Europe--Proof of former elevation of land--The
animals living in Europe during this age--Conclusions drawn from these
different animals--The vegetation of this period--Different climatic
conditions of Europe during the Glacial Age--Proofs of a Glacial
Age--Extent of the Glacial Ice--Evidence of warm Inter-glacial
Age--The primitive state of man--Early English civilization--Views of
Horace--Primitive man destitute of metals--Order in which different
materials were used by man for weapons--Evidence, from the River
Somme--History of Boucher de Perthes's investigations--Discussion of
the subject--Antiquity of these remains--Improvement during Paleolithic
Age--Description of the flint implements--Other countries where these
implements are found--What race of men were these tribes--The Canstadt
race--Mr. Dawkins's views--When did they first appear in Europe--The
authorities on this question--Conclusion.

The Tertiary Age, with its wonderful wealth of animal and plant
life, gradually drew to its close. In our "Outline" we have named the
period that next ensued the Glacial Age.<2> This was sufficiently exact
for our purpose then, but we must remember this is the name<3> for
a long series of years. During this period great changes in climate
occurred. At its commencement, a genial temperate climate prevailed
throughout Europe; and this, as we know, was preceded, during the
Miocene Age, by a warm tropical one.<4> This succession, then, shows us
that, for some reason or other, the climate had been gradually growing
colder. This change went