XEE4163682 Florin Perier making experiment of Torricelli at summit of the Puy de Dome, september 19, 1648 (atmospheric pressure, barometer) - Florin Perier measuring the height of the Barometre (mercury tube) by Evangelista Torricelli or Toricelli during the experiment on the gravity of the air by Blaise Pascal, at the summit of Puy de Dome (1648) - Engraving in ???ciences??put a the reach of all - popular physics and chemistry??????by Alexis Clerc. Late 19th century. Private collection. by French School, (19th century); Private Collection; (add.info.: Florin Perier making experiment of Torricelli at summit of the Puy de Dome, september 19, 1648 (atmospheric pressure, barometer) - Florin Perier measuring the height of the Barometre (mercury tube) by Evangelista Torricelli or Toricelli during the experiment on the gravity of the air by Blaise Pascal, at the summit of Puy de Dome (1648) - Engraving in ???ciences??put a the reach of all - popular physics and chemistry??????by Alexis Clerc. Late 19th century. Private collection.); Stefano Bianchetti; French, out of copyright.