Note 468 — Chapter VIII · THE SWORD IN ANCIENT EGYPT AND IN MODERN AFRICA.

For whose erection every ‘authority’ gives his or her own date. Mr. Proctor’s calculation, based upon the precession of the equinoxes, is b.c. 3350. It appears to me that we also obtain the date from the position of the polar star (α Draconis), which looked down the axis of the great entrance-passage before this long tube was blocked up. We may thus assume between b.c. 3440 and b.c. 3350.