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A massive branching coral with very small calices; an important reef builder.

Coral

A massive branching coral with very small calices; an important reef builder.

This is an illustration of a relatively flat island, surrounded by coral-reefs.

Coral Island

This is an illustration of a relatively flat island, surrounded by coral-reefs.

Coral in a fan like shape.

Fan Coral

Coral in a fan like shape.

Coral in the shape of a tree.

Madrepore Coral

Coral in the shape of a tree.

Coral in the shape of a mushroom.

Maushroom Coral

Coral in the shape of a mushroom.

Reef coral with slightly enlarged calices.

Reef Coral

Reef coral with slightly enlarged calices.

These animalcule are so small that 1,000,000 are equal in bulk to only one cubic inch. They appear to live in the layers of water near the surface, and after death to fall gradually to the bottom of the sea.

Foraminifera

These animalcule are so small that 1,000,000 are equal in bulk to only one cubic inch. They appear to…

This is an illustration of an island with an altitude of two thousand feet or more. It is surrounded by coral-reefs.

High Island

This is an illustration of an island with an altitude of two thousand feet or more. It is surrounded…

An illustration of section of mine from the Kimberley Mine located in South Africa.

Kimberley Mine Section

An illustration of section of mine from the Kimberley Mine located in South Africa.

Greek ship with the sail reefed.

Greek ship

Greek ship with the sail reefed.