His published works include Le four g lectrique (1897), and Le fluor et ses composes (1900), besides numerous papers in the Comptes rendus and other scientific periodicals.
Next the metal is covered with a very basic slag, made by melting lime with a little silica and fluor spar.
In France it is called fluorine, whilst the term fluor is applied to the element (F).
Scheele had done, and because he was employing a glass vessel he got "fluor acid air" (silicon fluoride).