690.2 Johann Sigismund ELSHOLTZ. De Phosphoris Quatuor, Observatio. Edition Secunda. 8° Jenae, prostat, apud Henricum Christoph Croekerum, Bibliopol. 1706 Young [Illustration:- p5 Engraving. 95x83. "Phosphorus fulgurans". A small piece of phosphorus is shown in a dish of liquid. Below this another piece of phosphorus is depicted sealed in a glass tube.]