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.
(1) Brachium. The part of the upper extremity from the shoulder to the elbow. (2) A part of the appendicular skeleton which includes the free part of the upper extremity (pars libera membri superioris [TA]) from the humerus to the finger tips.