Glass harmonica Franz Mesmer also played the armonica and used it as an integral part of his Mesmerism. An original Franklin armonica is in the archives at the Franklin Institute in Philadelphia, having been donated in 1956 by Franklin's descendants after "the children took great delight in breaking the bowls with spoons" during family gatherings. It is only placed on display for special occasions, such as Franklin's birthday. The Franklin Institute is also the home of the Benjamin Franklin National Memorial. A website has attempted to catalog publicly known Franklin-era glass armonicas. The Museum of Fine Arts, Boston has an early 19th-century
Paris in the 18th century Concorde. An attempt was also made in the late 18th century to improve the quality of street lighting. In 1669, under Louis XIV, the city was already lit with three thousand oil lamps, suspended in the middle of the street at a height of twenty feet, with twenty feet between each lantern, but not every street was lit, and the light was usually very dim; those going out at night or to the theater were usually obliged to hire a lantern-bearer to light their way until the end of the century. Between 1745 and 1769, the old lanterns were gradually