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    • Praeparatio Mercurii ad Lapidem per Regulu/am ♂ [Martis] ✱tum [Stellatum] et Lunam, ex MSS. Phi Americani
    • after 1670 – before 1678

    The manuscript—"On the Preparation of the [Sophick] Mercury for the [Philosophers'] stone by means of the stellate regulus of Mars [i.e. iron] and Luna [i.e. silver] from the Manuscripts of the American Philosopher"—was…

    • 1678

    Bound volume contains a compilation of earlier famous alchemical texts. Select title pages and plates are digitized including the plates illustrating The Twelve Keys of Basil Valentine (Basilius Valentinus). Also…

    • First Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Second Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Second Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Fourth Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Sixth Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Seventh Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678

    Bound volume contains a collection of alchemical texts. Select title pages and plates are digitized including the plates illustrating The Twelve Keys of Basil Valentine (Basilius Valentinus).

    • Eighth Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Ninth Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Tenth Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Eleventh Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • Twelfth Key from The Twelve Keys of Basil Valentine (Basilius Valentinus)
    • 1678
    • 1655

    This work contains a detailed description of the natural history cabinet created by the Danish scientist Ole Worm. The text is divided into four books, the first three dealing with minerals, the plant and animal…

    • 1652 (MDCLII)

    This 17th-century engraving is from Thomas Norton's The Ordinall of Alchimy and was made after a 15th-century illuminated manuscript (now preserved in the British Library). Norton, a practicing alchemist, depicts the…

    • 1652 (MDCLII)

    The engraved emblem on the lower half of this title page was made after a 15th-century illuminated manuscript (now preserved in the British Library) and depicts an eagle, snake, and toad against a solar and lunar…

    • 1652 (MDCLII)

    This 17th-century engraving is from Thomas Norton's The Ordinall of Alchimy and was made after a 15th-century illuminated manuscript (now preserved in the British Library). Norton, a practicing alchemist, depicts an…

    • 1650

    Spectators gather at night around a pyrotechnic fountain crowned with a statue of a child blowing bubbles—a symbol of vanity. A temple (decorated with geometric symbols, weights, measures, and various weapons and…

    • 1650

    Fig. 8: Diagram of a bullet and its diameter.
    Fig. 9: Geometric method for finding the diameter of a 1-pound bullet from that of a bullet of several pounds.
    Fig. 10: Diagram to help determine the dimensions of…

    • 1650

    Fig. 11: Principles of balance and unbalance.
    Fig. 12: Beam of a balance scale.
    Fig. 13: Beam of a steelyard balance.
    Fig. 14: Matrass in which to prepare oil of sulfur.
    Fig. 15: Plan of a powder magazine.
    Fig. 16:…

    • 1650

    Fig. 1: Scale to help calculate caliber.
    Fig. 2: Ratio of increase of diameter to circumference.
    Fig. 3: Representation of a "Caliber Scale" to calibrate bullets and balls.
    Fig. 4: Geometric operations to construct the…

    • 1650

    Fig. 17: Plan of a powder magazine by Eugenio Gentilini.
    Fig. 18: A new instrument for measuring gunpowder.
    Fig. 19: Sieve.
    Figs. 20 and 21: Rocket molds.