The tracery contains six panels by Sir Edward Burne-Jones (and glazed by the great craftsman William Morris), known as the "Angels of Creation, which tell the story of creation as found in Genesis:

First Day – A six winged seraph with the flame significant of energy upon his brow; standing upon the greenness of the void and holding the globe of the universe enclosing the spheres of light and darkness. – Gen. 1.4: “And God divided the light from darkness.”
Second Day – A six-winged seraph with sad eyes – Gen.1.7: “And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament.”
Third Day – The same, the seraph standing on the dry land, studded with forlorn flowers, showing the birth of delicate foliage within her mystic globe. – Gen.1.11: “And God said let the earth bring forth grass and herb.”
Fourth Day – This is brighter in tone, having more gold, ;symbolical of sun and moon and infinite glories of the heavens.—Gen 1.15: - “And God said let there be lights in the firmament to give light upon the earth.”
Fifth Day – Still brighter in effect. The seraph stands upon the wet sea margin strewn with fragile shells. The sphere contains a swift whirl of white-winged sea birds sweeping up from stormy waters. –Gen 1.20: “And God said let the waters bring forth abundantly the moving creature… and fowl.”
The Sixth Day - This panel shows the angel of the sixth day holding the sphere, the angels of the former days beside him and the angel of the seventh day at his feet. The angel of the day of rest is flower garlanded, among rose, playing a many stringed instrument. The sphere shows Adam and Eve first meeting in the Garden of Eden beside the forbidden tree, behind which the great coils of the serpent are faintly seen. This is described as the best of the six panels, the figures of Adam and Eve full of grace and simplicity. – Gen.1.26: “And God said, let us make man in our own image…male and female created He them.”

Surrounding these are smaller lights filled with pictures of angels playing musical instruments, making melody in honour of Creation, Incarnation and Redemption. The Incarnation is shown in a painting of the Annunciation at the top of the arch, which through the Creation of Man links up with an impressive panel on the centre of the window setting out the story of St. Christopher typifying Mans’ Redemption.