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The Third is called Diastyle; viz. where the Pillars are further distant, the space of the Intercolumniation being three Diameters, and the Inconvenience is, that the space is so great, that the Architraves which lie upon the two Pillars are in danger of breaking; because the Ancients made them of one Stone.

Chap. 8. is much greater than that of Diastyle; and for this reason it can have no Architrave but of Wood.

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

Diastyle, from διὰ and στύλος: Columna is a sort of Edifice where the Pillars are distanced one from another the breadth of 3 Diameters of the Pillar.

This Table contains the five sorts of Edifices: AA is the Pycnostyle; that is to say, where the Pillars are very close, the Intercolumniation being but of one Diameter, and a half of the Column: BB is the Systyle, viz. where the Pillars have two Diameters of Intercolumniation: CC is the Diastyle, viz. where the Pillars are at that distance, that they have for the Intercolumniation three Diameters: DD is the Areostyle, where the Pillars are far asunder.