SECTION V.

How many systems of fossiliferous rocks are there, and what are they?

What other system is provisionally introduced?

What is its position?

Describe it.

What materials of value are obtained from this system?

What fossils does it contain?

In what localities is it found?

What explanation, in reference to these rocks, is given by those who deny that they constitute a distinct system?

In what respects does the State of New York present the best facilities for studying the Silurian system?

Describe the Champlain division.

The Ontario division.

The Helderberg division.

Describe the Erie division.

What are the fossils of this system?

Describe the Crinoidea.

The Cephalopoda, and the two forms.

The Trilobite.

What higher forms of animal life existed during the silurian period?

The geographical range of the system?

Of what does the Old Red Sandstone consist?

Describe its three divisions.

What are its fossils?

Describe the fishes of that period.

What was the peculiarity of the Pterichthys?

Of the Cephalaspis?

Where are the rocks of this system found?

How is the carboniferous system divided?

Describe the carboniferous limestone.

What ores are found in it?

Describe, its fossils.

Describe the millstone grit.

Of what do the coal measures consist?

How does the ironstone occur?

Describe the coal beds.

How is the continuity of the strata interrupted?

What variations from this general type occur in the formation?

Describe the several varieties of coal.

How is the coal quarried?

What mineral springs occur in this formation?

To what uses is coal applied?

(The coal was deposited thousands of years ago, and has served no useful purpose, that we know of, till very recently. Its formation was planned and completed to meet a want which was not to be felt till the lapse of many ages. It is a notable instance of the wisdom and forethought, as well as of the benevolence, of God.) In what does this prospective arrangement consist? What are the character and position of the fossils of the coal measures?

What are the four most abundant forms?

Describe the Stigmaria. The Sigillaria. The Lepidodendron. The Calamite.

Where are the beds of coal found?

What is the fourth formation of rocks?

Into what two portions is it divided?

Of what does the Permian portion consist?

The Trias?

What minerals are found in this formation?

What springs?

What fossils?

How are the fishes of the earlier and later portions distinguished?

What peculiarity of the red sandstones is mentioned?

By what kinds of animals were the tracks, which they contain, made?

Give localities of the new red sandstone.

What are the three divisions of the Oölitic system?

Describe the Lias.

The Oölite.

The Wealden.

What are the general peculiarities of the system?

What are the fossil animals of the system?

By which class of fossil animals is the system characterized?

Describe the Ichthyosaurus. The Plesiosaurus. Pterodactyle. The Iguanodon.

Where is the system developed?

What are the divisions of the Cretaceous system?

How are the layers of chalk separated?

What is the geological position of the Neocomian system, and the greensand of this country?

What are the fossils of this system?

What the geographical range?

How are the tertiary deposits distinguished from the older formations?

Upon what principle is the tertiary system divided?

What are these divisions called, and what does each, name signify?

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 class are accessible?

What others are in progress?

What are the fossils of this formation?