ELEMENTS
DD 0l TETRAKTYS. (Pronounced tet-ruk-TEES) A group of four. The elements of earth, air, fire and water compose a tetraktys.
(ET 197)
ET 83 Seven elements are constructing the human body
HS 159 Four elements of nature (earth, water, fire & ether)
HS 162 See above under Elementals
MS 107 Archangels are the masters of the elements