The true story of Purple of Cassius

J. R. Glauber, “Des Teutschlands Wohlfahrt”, Amsterdam, 1656–61, Part IV, pp. 35–36

J. Kunckel, “Ars Vitraria Experimentalis”, Frankfurt and Leipzig, 1679, p. 192

This was translated into French as “Oeuvres Metallurgiques de M. Jean-Christian Orschall”, Paris, 1760, by the Baron d’Holbach, whose preface gives the story of Orschall being deprived of his office by the intrigues of his enemies.

J. C. Orschall, “Sol Sine Veste”, Augsburg, 1684, pp. 18–19

J. Kunckel, “Collegium Physico-Chymicum Experimentale, oder Laboratorium Chymicum”, Hamburg, 1716, p. 650

J. Kunckel,ibid., p. 382.

M. Mields, “Aus der Jugendzeit des Europäischen Porzellans”,Sprechsaal, 1960,93, 391

Sir Harry Garner, “The Origins ofFamille Rose”,Trans. Oriental Ceram. Soc., 1967/69,37, 1–16