THE

ARCHITECTURE

OF

MARCUS VITRUVIUS POLLIO.

BOOK THE FOURTH.

i *' '

INTRODUCTION.

Finding, O Emperor, that many persons have left usprecepts in Architecture, and volumes of comment-aries thereon, not systematically arranged, but meregeneral principles, little more indeed than scatteredhints, I considered it a worthy and useful task, first, togive a general view of the whole subject, and then todilate in each book on the detail. Thus, Csesar, I treatedin the first book on the duties of an architect, and the

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