Wilfrid De Fonvielle, a French author, born in Paris in 1828. He taught mathematics and devoted himself to the popularization of scientific subjects, to journalism, and to aeronautics. His principal works are: LHomme fossile (1865), Les merveilles du monde invisible (1866), Eclairs et tonnerres (1867), and VAs-tronomie moderne (1868), some of which have been translated into English. He published in 1870 a narrative of his aeronautic voyages, which is included in Glaisher's Travels in the Air" (London, 1871).