The Elements of Geology; Adapted to the Use of Schools and Colleges Part 18

[Ill.u.s.tration: Fig. 43.]

In what portion of the tertiary period was the drift deposited

What is the geographical range of the drift?

Of what does it consist?

What is the latest tertiary deposit?

What are the fossils of the tertiary system?

Describe the Paleotherium. The Anoplotherium. The Megatherium. The Mastodon. The Mammoth.

What other animals belonged to this period?

Where are the tertiary deposits found?

What formations are regarded as recent?

What formations of this cla.s.s are accessible?

What others are in progress?

What are the fossils of this formation?

SECTION VI.

What is a fossil?

In what ways are they preserved?

When is a fossil said to be mineralized?

Describe the process of mineralization.

How is it proved that the removal of the organic matter and subst.i.tution of mineral particles are simultaneous?

Were animals created before vegetables?

How is this shown?

At what period was the vegetable growth the greatest?

What forms of animal life were most abundant during the earlier periods?

What vertebrated animals belonged to these periods?

What advance is made in the new red sandstone period?

During what period do the mammalia first appear in abundance?

During what geological period was man created?

How are the footprints and skeletons of human beings hi solid rocks accounted for?

Why are not fossils distributed uniformly through all the formations, and through all the parts of each formation?

In what does the importance of fossils consist?

How are the fresh-water and marine formations distinguished?

What circ.u.mstances render it difficult to identify rocks of the same age in different localities?

How are formations identified?

Was the work of creation one of short duration?

What was the last work of creation of which we have any geological evidence?

Why may we presume that no more species will be created?

Do all the animal and vegetable species which have been created still exist?

[Ill.u.s.tration: Fig. 44.]

[Ill.u.s.tration: Fig. 45.]

[Ill.u.s.tration: Fig. 46.]

[Ill.u.s.tration: Fig. 47.]

What causes are operating to destroy species?

SECTION VII.

How long has it been since the creation of the earth?

How does the amount of stratified rock indicate the great antiquity of the earth?

How does the stratification show the same thing?

What is the proof that the princ.i.p.al strata were deposited before the creation of man, and how does this fact bear upon the question of the antiquity of the earth?

Give the argument drawn from the successive creations and disappearance of animal and vegetable species.

The argument drawn from the amount of organic matter in the stratified rocks.

The argument from slow acc.u.mulation.