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Abstract

This rock was first described by S. N. Wintle in 1875 as
eurite porphyry, which it had been termed by Professor G.
H. F. Ulrich, who, however, did not publish his description
until 1877. In 1875 also the late Chas. Gould wrote as
follows :
—
" Mount Bischoff is a conical eminence rising to about
2,500ft. above the level of the sea. ... It consists of
a small protrusion of a porphyritic rock having a felsitic
base, with granules and crystals of quartz and felspar ; it
weathers white, and is honeycombed or vesicular on the
surface, most probably from the decomposition and removal
of pyrites, which is freely disseminated throughout in places!."
Includes photographic plates

Item Type:	Article
Authors/Creators:	Twelvetrees, William Harper and Petterd, William Frederick
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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