You are not allowed to view links. Register or Login to view. (click on “Items on Folio” on the left for an extensive description; “Enlarge image” is on the right) in St John's College ms 17 (England, 1110 ca) is simpler than the Rosettes diagram, but it has a roughly similar structure, being mainly composed of nine circles, one at the center and eight disposed in a quadrangular pattern.
The four circles at the corners correspond to the four elements and the cardinal directions. The four circles along the sides of the diamond correspond to the four seasons and the four ages of man.
Byrhtferth's diagram also includes an outer 8-shaped layer in which the signs of the zodiac and the months are inscribed (this is one of the many differences with the Rosettes diagram).
The central circle contains “an eight-spoked wheel, resembling a sundial or horologium, above which is a narrow horizontal strip containing some symbols, a fragment of Ogham or pseudo-Ogham writing, and abbreviated words.” The meaning of the central inscription has not been identified with certainty, but it contains the Greek abbreviation of Christ XPC (chi-rho-sigma) so it is reasonable to assume that the center is related to God (while the Voynich Rosettes diagram seems to be strictly “scientific” with no recognizable Christian or religious meaning).
The four circles at the corners correspond to the four elements and the cardinal directions. The four circles along the sides of the diamond correspond to the four seasons and the four ages of man.
Byrhtferth's diagram also includes an outer 8-shaped layer in which the signs of the zodiac and the months are inscribed (this is one of the many differences with the Rosettes diagram).
The central circle contains “an eight-spoked wheel, resembling a sundial or horologium, above which is a narrow horizontal strip containing some symbols, a fragment of Ogham or pseudo-Ogham writing, and abbreviated words.” The meaning of the central inscription has not been identified with certainty, but it contains the Greek abbreviation of Christ XPC (chi-rho-sigma) so it is reasonable to assume that the center is related to God (while the Voynich Rosettes diagram seems to be strictly “scientific” with no recognizable Christian or religious meaning).

