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II.—On Banded and Brecciated Concretions

Published online by Cambridge University Press:  01 May 2009

John Ruskin
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Extract

I Propose now to pursue my subject by describing in some detail a series of typical examples of the principal groups of agatescent minerals; noting, as we proceed, the circumstances in each which appear to afford proper ground for future general classification.

Type
Original Articles
Information
Geological Magazine , Volume 5 , Issue 46 , April 1868 , pp. 156 - 161
Copyright
Copyright © Cambridge University Press 1868

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References

1 I have carelessly worded the title of Plate X. as if the two figures were a vertical saotion and surface map; but the lower one is, of course, only explanatory of the upper.