Fern fronds are the leaves of ferns. They are a major organ of a fern and range significantly between species. Some species of tree ferns have fronds that grow as large as 5 m long while other species are limited to growing frond only 1 cm in length.
Cerium is a soft, ductile, silvery-white metallic chemical element with symbol Ce and atomic number 58. Cerium tarnishes when exposed to air, and it is soft enough to be cut with a knife. Cerium is the second element in the lanthanide series, and while it often shows the +3 state characteristic of the series, it also exceptionally has a stable +4 state that does not oxidise water.
May 21 - June 21. The glyph for Gemini represents the heavenly twins and its ruling planet is Mercury. Gemini is the third sign of the zodiac a member of the the horns of the ram. Aries is the first sign of the zodiac, a mutable sign, masculine and of the air element. The Sun enters the sign of Gemini around 21 May and exits around 21 June. Symbolically the written symbol of Gemini corresponds with the Roman numeral for 2 which indicates the essential duality of the sign.