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Coal in the Silurian at Presteign
Published online by Cambridge University Press: 01 May 2009
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- Copyright © Cambridge University Press 1917
References
1 Lantern-slides of many unpublished photographs and drawings of the Nimrud crater and its surroundings, a model coloured geologically (scale, 1 inch = 1 mile), and a series of rock-specimens and rock-sections were exhibited by Dr. Oswald in illustration of his lecture. A Geological Survey map of the Maclean Umtata district, Cape Province, Sheet 27, scale 3.75 miles = 1 inch, 1917 (presented by the Geological Survey of the Union of South Africa), was also exhibited.