has been, the price of material good. So we see
how necessary it is that a very extended time be given us to account for
man's present advancement. Supposing an angel of light was to come to
the aid of our feeble understanding, and unroll before us the pages of
the past, a past of which, with all our endeavors, we as yet know but
little. Can we doubt that, from such a review, we would arise with
higher ideas of man's worth? Our sense of the depths from which he
has ascended is equated only by our appreciation of the future opening
before him. Individually we shall soon have passed away. Our nation may
disappear. But we believe our race has yet but fairly started in its
line of progress; time only is wanted. We can but think that that view
which limits man to an existence extending over but a few thousand years
of the past, is a belittling one. Rather let us think of him as existing
from a past separated from us by these many thousand years; winning his
present position by the exercise of God-given powers.

REFERENCES

(1) The manuscript of this chapter was submitted to Prof. G. F.
Wright, of Oberlin, for criticism.
(2) Wallace's "Island Life," p. 113.
(3) Nordenskiold's "American Journal of Science," vol. 110, p.
58.
(4) Wright's "Studies in Science and Religion," p. 307, where a
map of this moraine is given.
(5) There is, however, a small area in the south-west part of
Wisconsin where, for some reason, the ice passed by.
(6) Dane's "Manual of Geology," p. 538.
(7) Wright's "Studies in Science and Religion," p. 308.
(8) "Men of the Drift," p. 71.
(9) Geikie's "Great Ice Age," p. 93.
(10) "Men of the River Drift."
(11) Abbott's "Primitive Industry," p. 545; Quoted from "Geology
of Minnesota." Report, 1877, p. 37.
(12) Geikie's "Great Ice Age," p. 97.
(13) The astronomical theory, which we will first examine, was
first enunciated by Mr. Croll, following a suggestion of the
astronomer Adhemer. Mr. Croll's views were set forth in many
able papers, and finally gathered into a volume entitled
"Climate and Time in their Geological Relation." The ablest
defense of these views is that by Mr. James Geikie, in his works
"The Great Ice Age," and "Prehistoric Europe."
(14) Geikie's "Great Ice Age," p. 114.
(15) Lubbock's "Prehistoric Times," p. 420, Table 4.
(16) Ibid., Table 5.
(17) Ge