Bolognian phosphorus

Noun

 * 1)  A poorly-characterized phosphorescent substance obtained by heating barium sulfate.
 * 2) * 1839 John White Webster - A Manual of Chemistry: Containing the Principal Facts of the Science, in the Order in which They...
 * and the Bolognian phosphorus, discovered by Vincenzo Cascariolo, a shoemaker of Bologna, is made by reducing compact sulphate of baryta to a fine powder, which is formed into cakes with mucilage, and these are heated to redness.