The apron : its traditions, history and secret significances (1914)
Higgins, Frank C. (Francis Carlos), b. 1867 · New York : Author · leaf 22
as bastard and meaningless imitations of the great first, is that thesecond Pyramid that of Mycerinus, orMen-Kau-JRa, has for its vertical sectiontwo 3-4-5 triangles, as in Fig. 13, whilethe Third that of Chephren or Kaf-Rais built on the plan of the great original inlesser volume. All the Pyramids… … Fig. 13 20 The Masonic Apron.
Freemasonry
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![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-85-120.webp)
