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chapter:
INTRODUCTION
CHAPTER I: THE ORIGIN OF THE DWELLING HOUSE
CHAPTER II: ON THE PRIMORDIAL SUBSTANCE ACCORDING TO THE PHYSICISTS
CHAPTER III: BRICK
CHAPTER IV: SAND
CHAPTER V: LIME
CHAPTER VI: POZZOLANA
CHAPTER VII: STONE
CHAPTER VIII: METHODS OF BUILDING WALLS
CHAPTER IX: TIMBER
CHAPTER X: HIGHLAND AND LOWLAND FIR
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BOOK I
BOOK II
BOOK III
BOOK IV
BOOK V
BOOK VI
BOOK VII
BOOK IX
3. The kind of sponge-stone taken from this region is not produced everywhere else, but only about Aetna and among the hills of Mysia which the Greeks call the “Burnt District,” and in other places of the same peculiar nature. Seeing that in such places there are found hot springs and warm vapour in excavations on the mountains, and that the ancients tell us that there were once fires spreading over the fields in those very regions, it seems to be certain that moisture has been extracted from the tufa and earth, by the force of fire, just as it is from limestone in kilns.
Vitruvius: The Ten Books on Architecture. Vitruvius. Morris Hicky Morgan. Cambridge: Harvard University Press. London: Humphrey Milford. Oxford University Press. 1914.
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