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Abstract

It may be premised that the object of this paper is, not to
announce any new discovery, but merely to give a brief
summary of what is known of the history of coral reefs, with
notices of the chief theories that have been advanced in connection
with the subject.
The coral polyps belonging to the family of the Astraeidae,
the chief reef-builders, flourish only in the warmer waters of
the ocean within the tropics. Their range extends from
about 20deg. south to 20deg. north of the Equator; but,
under the influence of the Gulf Stream, they are found as far
north as the Bermudas.
Coral reefs are classed under three heads, fringing reefs,
barrier reefs, and atolls.

Item Type:	Article
Authors/Creators:	Stephens, Thomas
Keywords:	Royal Society of Tasmania, Van Diemens Land, VDL, Hobart Town, natural sciences, proceedings, records
Journal or Publication Title:	Papers & Proceedings of the Royal Society of Tasmania
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	In 1843 the Horticultural and Botanical Society of Van Diemen's Land was founded and became the Royal Society of Van Diemen's Land for Horticulture, Botany, and the Advancement of Science in 1844. In 1855 its name changed to Royal Society of Tasmania for Horticulture, Botany, and the Advancement of Science. In 1911 the name was shortened to Royal Society of Tasmania.
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