lopment of the cor-belled or offset vault (e.g. Tomb oG, PI. XIV),from which the true arch seems to have natu-rally evolved in Egypt as in Chaldasa. Theseiies of sketches which show this has nochronological significance, for the form seemsto have developed spontaneously, as stated, butthey are… … TOMB OF NETER-KHET. TOMB OF HEN-NEKHT