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 of wood, the rest usually being made of white limestone from Arcueil, Vaugirard or Meudon, and plaster from the gypsum mines under Montmartre and around the city. Seventy-one percent of Paris residences had three rooms or less, usually a salon, a bedroom and a kitchen, the salon also serving as a dining room. But forty-five percent of residences did not have a separate kitchen; meals were prepared in the salon or bedroom. In the second half of the century, only 6.5 percent of apartments had a toilet or a bath. In the 18th century, the time of day or night