Excerpt from The Geology of Building Stones
This is the fourth volume of a series of works treating of economic geology, the previous books having been devoted to 'The Geology of Coal and Coal-Mining,' 'The Geology of Ore Deposits,' and 'The Geology of Water-Supply.'
A work on 'The Geology of Building Stones,' dealing with the great advance made in their study both at home and abroad of recent years, was much needed, and the author of the present work, under whose direction as Curator of the Museum of Practical Geology in London the collection of building stones in that museum assumed its present shape, is peculiarly qualified for the task of writing the work.
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