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,
Social class in 18th-century Spain of the common people continued being very low due to maldistribution of resources. Much of what they could earn was taken in rent, other payments to the landowners, and debt payments (Lynch, p. 5). The worst living conditions for peasants were found in Andalucía, which contained the highest proportion of landless rural labourers ("jornaleros"). Here, the labourers survived only by the work of women and children, by searching for discarded food, and with the aid of charity. Social class in 18th-century Spain The social structure of Spain in the 18th century continued to be based upon nobility and peasantry. However,