Glass harmonica by rubbing glass or crystal goblets or bowls. The alternate instrument consisting of a set of wine glasses (usually tuned with water) is generally known in English as "musical glasses" or the "glass harp". When Benjamin Franklin invented his mechanical version of the instrument in 1761, he called it the armonica, based on the Italian word "armonia", which means "harmony". The unrelated free-reed wind instrument aeolina, today called the "harmonica", was not invented until 1821, sixty years later. The word "hydrodaktulopsychicharmonica" is also recorded, composed of Greek roots to mean something like "harmonica to produce music for the soul by
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