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Chap. 2.He likewise makes mention of another Famous Author, who found out the proportion of all the Parts of a Fabrick, which was Hermogenes; to whom he attributes the Invention of the Eustyle, Pseudodiptere, and of all that is beautiful and excellent in Architecture.

Eustyle, from εὖ bene, and στὺλος a Pillar; its the Order where Pillars are rightly placed, the Intercolumniations being two Diameters and a quarter.

The Fifth is called Eustyle; viz. where the Pillars are distant from one another by a more convenient Proportion than in any of the other kind.

As to the Diastyle and Eustyle, the height is divided into Eight parts and an half, to give one to the breadth.

There is no certain Proportion; we have given in this Figure four Diameters of Intercolumniation, it may have more: The fifth sort called Eustyle, is in the third Table.