Glass harmonica Franklin and a fellow of the Royal Society, extended the experiments of Pockrich, contriving a set of glasses better tuned and easier to play. During the same decade, Christoph Willibald Gluck also attracted attention playing a similar instrument in England. Benjamin Franklin invented a radically new arrangement of the glasses in 1761 after seeing water-filled wine glasses played by Edmund Delaval at Cambridge in England in May 1761. Franklin worked with London glassblower Charles James to build one, and it had its world premiere in early 1762, played by Marianne Davies. Writing to his friend Giambatista Beccaria in Turin, Italy,
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