Note 25 — MORE OBSERVATIONS MADE IN EGYPT, BY Guilandinus, Alpinus, and others.
Nicolaus Staphorst translation
The compass of the Scapus of this column at Alexandria near the Tarus is 24 English feet: The compass of the Scapus of those at Rome is fifteen English feet, and three inches. By these proportions, and by those rules which are expressed in Vitruvius, and in other books of Architecture, the ingenious reader may compute the true dimensions of those before the Pantheon, and of this at Alexandria, being in my calculation the most magnificent column that ever was made of one entire stone.