The occult significance of Aquarius is knowledge. Aquarius, the sign of the water bearer, is an eminently revolutionary sign. There are four types of knowledge or secret science. We need to know what these four types of knowledge are.
Upper limb. The upper limb or upper extremity is the region in a vertebrate animal extending from the deltoid region to the hand, including the arm, axilla and shoulder.
lower extremity n. The hip, thigh, leg, ankle, or foot. Also called inferior limb, pelvic limb. He gave one of Zarathustra's over-sized ears a playful tug, absently noting a series of small nodules along its lower extremity. Perforations of the lower extremity of the bone were very common. To lessen the hold of the wind upon the knotted cord, he made the lower extremity fast to one of the riders of the Durande. Moreover, the lower extremity is terminated by four strong spurs. A few persistent ones hung about the lower extremity of the street or lurked about the piers, spooning.