Surveys of the Great Pyramids

@article{PetrieSurveysOT,
  title={Surveys of the Great Pyramids},
  author={W. Petrie},
  journal={Nature},
  volume={116},
  pages={942-943}
}
THERE seems a periodicity in the attention to the size of the Great Pyramid: the French survey 1799, Howard Vyse 1838, my survey 1881, and now Mr. Cole's survey in 1925, are at nearly equal intervals. The difficulty in measurement results from the Arab destruction of nearly the whole of the fine sloping blocks of casing, about 3 feet thick, thus leaving the inner core of masonry in steps, and further, the banking of the ruins up to 20 or 30 feet against the faces, which obstructs the base. The… Expand