01/23/2026
The Pass-Keys to Alchemy: The Lost Book of Lapidus by Lapidus (David Curwen), published in 2012. Limited edition. A remarkable modern alchemical text by one of the most enigmatic figures in twentieth-century alchemy, Lapidus, the nom de plume of British laboratory alchemist David Curwen, one of the very few known practitioners of operative alchemy in the United Kingdom during the latter half of the century. Long believed that In Pursuit of Gold was Curwen’s only alchemical work, this volume reveals a second, long-concealed manuscript that circulated privately for decades among a small circle of trusted adepts. According to the publisher, The Pass-Keys to Alchemy details a series of essential “pass-keys” to the successful confection of the Philosophers’ Stone, each chapter distilling insights drawn from a lifetime of practical laboratory experience. The work engages deeply with canonical alchemical authorities including Eirenæus Philalethes, Ali Puli, Paracelsus, Benedictus Figulus, Sir Edward Kelly, and Michael Maier’s Atalanta Fugiens, among others. Included are an introductory essay by Tony Matthews, grandson of Lapidus, and sixteen of Theodor de Bry’s engraved emblems from Atalanta Fugiens, each accompanied by Lapidus’s commentary. A rare and serious contribution to modern alchemical literature, presenting practical, theoretical, and symbolic material of exceptional depth. Hardcover with the original dust jacket, exhibiting only the very lightest shelfwear. www.transmutationpublishing.com