Note 3 — Chapter I · CAIRO AND THE GREAT PYRAMID.
Reading edition
Since the first edition of this book was issued, the publication of Mr. W. M. Flinders Petrie’s standard work, entitled “The Pyramids and Temples of Gizeh,” has for the first time placed a thoroughly accurate and scientific description of the great pyramid at the disposal of students. Calculating from the rock-cut sockets at the four corners, and from the true level of the pavement, Mr. Petrie finds that the square of the original base of the structure, in inches, is of these dimensions:
Length. Difference from Mean. Azimuth. Difference from Mean.
N.9069.4+ .6- 3’ 20”+ 23”
E.9067.7- 1.1- 3’ 57”- 14”
S.9069.5+ .7- 3’ 41”+ 2”
W. 9068.6 - .2 - 3’ 54” - 11”
Mean.9068.8.65- 3’ 43”12”
For the height, Mr. Petrie, after duly weighing all data, such as the thickness of the three casing-stones yet in situ, and the presumed thickness of those which formerly faced the upper courses of the masonry, gives from his observations of the mean angle of the pyramid, a height from base to apex of 5776.0 ± 7.0 inches. See “The Pyramids and Temples of Gizeh,” chap. vi. pp. 37-43. [Note to the second edition.]