Idemque Athenis quam magnae sunt gnomonis partes quattuor, umbrae sunt tres, ad vii Rhodo v, ad xi Tarenti ix, ad quinque <Alexandriae> tres, ceterisque omnibus locis aliae alio modo umbrae gnomonum aequinoctiales a natura rerum inveniuntur disparatae.
Further, at Athens the shadows are three-quarters of the gnomon, at Rhodes five-sevenths, at Tarentum nine-elevenths, at Alexandria three-fifths; and in other places the shadows of the gnomon at the equinox are found to differ by different amounts, in accordance with the Nature of Things.
final_alignments\Vitruvius_Architecture_Book_9.json