DUNE Wrote:
-------------------------------------------------------
>
> Petrie , if i read him right, is saying the casing
> took up this hollowing by increasing the thickness
> of the casing
>
> He says
>
> p. 44] This hollowing is a striking feature; and
> beside the general curve of the face, each side
> has a sort of groove specially down the middle of
> the face, showing that there must have been a
> sudden increase of the casing thickness down the
> midline. The whole of the hollowing was estimated
> at 37 on the N. face; and adding this to the
> casing thickness at the
>
> It would suggest the concavity affect was for
> stability purposes , and would not be visible once
> the casing was applied

Do you know if the central groove extends up to the top course? Is this something that can only be seen from far away, or has anyone actually observed a "groove" in the core masonry up close?