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chapter:
INTRODUCTION
CHAPTER I: THE FORUM AND BASILICA
CHAPTER II: THE TREASURY, PRISON, AND SENATE HOUSE
CHAPTER III: THE THEATRE: ITS SITE, FOUNDATIONS, AND ACOUSTICS
CHAPTER IV: HARMONICS
CHAPTER V: SOUNDING VESSELS IN THE THEATRE
CHAPTER VI: PLAN OF THE THEATRE
CHAPTER VII: GREEK THEATRES
CHAPTER VIII: ACOUSTICS OF THE SITE OF A THEATRE
CHAPTER IX: COLONNADES AND WALKS
CHAPTER X: BATHS
CHAPTER XI: THE
PALAESTRA
CHAPTER XII: HARBOURS, BREAKWATERS, AND SHIPYARDS
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Table of Contents:
BOOK I
BOOK II
BOOK III
BOOK IV
BOOK V
BOOK VI
BOOK VII
BOOK IX
4. Now then, these intervals of tones and semitones of the tetrachord are a division introduced by nature in the case of the voice, and she has defined their limits by measures according to the magnitude of the intervals, and determined their characteristics in certain different ways. These natural laws are followed by the skilled workmen who fashion musical instruments, in bringing them to the perfection of their proper concords.
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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