Vitruvius on Architecture, Monacelli Press

This Ionic capital, now in the Istanbul Archaeological Museum, once adorned a column in that temple (compare with drawing of the Temple of Artemis). It is not likely that Vitruvius ever visited the Temple of Artemis, but he did read an architectural treatise written by Hermogenes—whom Vitruvius described as a “fountain” from which later architects “imbibe the guiding principles of the discipline!”