Note 188 — Chapter III · (continued 2)
Walter Armstrong translation
Lepsius, Briefe aus Ægypten, pp. 41, 42 (in speaking of the Pyramid of Meidoum, from which he received the first hint of this explanation). See also his paper entitled Ueber den Bau der Pyramiden, in the Monatsbericht of the Berlin Academy, 1843, pp. 177-203.