1911 Encyclopædia Britannica, Volume 7… (1911)
“ DELUC, JEAN ANDRE (1727–1817) , Swiss geologist and meteorologist, born at Geneva on the 8th of February 1727, was descended from a family which had emigrated from Lucca and settled at Geneva in the 15th century. His father, François Deluc, was the author of some publications in refutation of Mandeville and other rationalistic writers, which are best known through Rousseau’s humorous account of his ennui in reading them; and he gave his son an excellent education, chiefly in mathematics and natural science. ”
