What the most probable fix is, and all it claims to be, is a point through which the required sumner line is to be drawn.
"Lectures in Navigation"
Ernest Gallaudet Draper
Even as late as 1858, at the marriage of the Princess Royal of England, Archbishop sumner appeared in his wig.
"England in the Days of Old"
William Andrews
It is easy to see why Professor sumner wished to confuse this issue.
"The Book of Life: Vol. I Mind and Body; Vol. II Love and Society"
Upton Sinclair