Period—The Twins, Castor and Pollux—The Argonauts—King Solomon's Pillars—Maia—Ovid and Wedding of Mary Queen of Scots—Gemini Number—Characteristics—Agates and their Virtues—Orpheus—Chrysoprase—Alexander the Great—Virtues of the Stone. Gemini, the Zodiacal House of the Twins, is occupied by the Sun from the 22nd of May until the 21st of June approximately, and is ruled by the planet Mercury. In the earliest Zodiacs this House was symbolised by two kids, for which the Greeks substituted twin…