http://www.the-equinox.org/vol1/no2/eqi02020h.html

(Equinox vol.1 part II – from RITUAL OF THE 4° = 7^¤ GRADE OF PHILOSOPHUS under The Pyramid of the Four Elements – a book by Crowley)

This Key represents a Star with seven principal and fourteen secondary rays, altogether twenty-one, the number of the divine name Eheieh. In the Egyptian sense it is Sirius, the Dog-Star, the star of Isis-Sothis. Around it are the seven planets. The nude figure {279} is the synthesis of Isis, Nephthys, and Hathoor. She is Aima, Binah, and Tebunah, the great Supernal Mother Aima Elohim pouring upon Earth the Waters of Creation. In This Key she is completely unveiled, whilst in the twenty-first she was only partially so. The two urns contain the influences of Chokhmah and Binah. On the right springs the Tree of Life, and on the left the Tree of the Knowledge of Good and of Evil, whereon the bird of Hermes alights; therefore this Key represents the restored World