magic circle

The pale light floated over her as Ten Euyck came up and seemed to illumine her within a magic circle.

He started well, but on arriving at the magic circle the plough shied and the wooden landside—or chip, as it was called—came off.

The magic circle is a modification of the magic square, one form of which was devised by Franklin.

Happy people do not really want friends outside to come into the magic circle and share their happiness.

For those who were beyond the magic circle, this process was reversed.