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Abstract

The point under discussion is the origin of the "formation""
known as the " Iron Blow," the oxidised portion of which was
described by Mr. Thureau as " volcanic mud or ash." Mr.
Johnston, however, from close examination on the spot, and
from the " internal evidence " yielded by specimens,
etc., has attributed to this a non-volcanic origin. Includes discussion by Mr. W. F. Ward, Government Analyst.

Item Type:	Article
Authors/Creators:	Johnston, Robert Mackenzie
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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