VITAL, CHAIM, Sepher Ha-Techunah, [formulae and calculations to determine the New Moons, Solar and Lunar cycles, Seasons and systems of intercalculation]

With an introduction by the great Kabbalist, R. Chai Raphael Yedidyah Aboulafia, who writes in addition to the Kabbalah that R. Chaim Vital imbibed from Isaac Luria, “he held the keys to other scientific disciplines which are “Rakachoth” (phamaceutics) necessary for understanding the “internal” (i.e. Kabbalistic) portions of the Torah.”