'Ra in his circle shall guard Amenotaph.' The secret lies in the circle, Kit.

Do you suppose it could mean the rim of the urn ?" Kit knelt beside him, following the inscription on the outside of the urn carefully with her finger-tip, the same as the Dean had done, and stopping when she came to a small circle in black and red outline.
"Do you suppose Ra lives here, Uncle Cassius ?" she asked, poking at it thoughtfully.

She peered on the inner side at the corresponding spot to the circle, and gave a little cry of excitement.

There was the faintest sign of a circle here also, like one of the age cracks on Cousin Roxy's antique china.

"See," she cried.