Then he was a demonstrator at École pratique des hautes études and a lecturer to the Faculty of Science of the University of Paris.In January 4,1887, he was made assistant professor of that university, then in 1899, full professor.
On January 4,1887, he was made assistant professor at that university, then in 1899, full professor. Then he was a demonstrator at École pratique des hautes études and a lecturer to the Faculty of Science of the University of Paris.
Then he was a demonstrator at École pratique des hautes études and a lecturer to the Faculty of Science of the University of Paris. On January 4,1887, he was made assistant professor at that university, then in 1899, full professor.
Then he was a demonstrator at École pratique des hautes études and a lecturer to the Faculty of Science of the University of Paris. On January 4,1887, he was made assistant professor at that university, then in 1899, full professor.