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.
Upper extremity. Main article: Upper extremity of femur. The upper extremity of right femur viewed from behind and above, showing head, neck, and the greater and lesser trochanter. The upper or proximal extremity (close to the torso) contains the head, neck, the two trochanters and adjacent structures.