Ritter (Amsterdam, 1898), containing a series of articles on all subjects connected with the kingdom during the second half of the 19th century, written by specialists; and Les Pays Bas (Leiden, 1899), and La Hollande geographique, ethnologique, politique, &c. (Paris, 1900), both works of the same class as the preceding.
This page gives an overview of all articles in the 1911 Brittanica which are alphabetized under Bas to Bau.
Barium occurs chiefly in the form of barytes or heavy spar, BaS 04, and witherite, BaCO 3, and to a less extent in baryto-calcite, baryto-celestine, and various complex silicates.
Barium sulphide, BaS, is obtained by passing sulphuretted hydrogen over heated barium monoxide, or better by fusion of the sulphate with a small coal.
Of these companies the Union miniere du Haut Katanga had for object the development of the mineral wealth of the district named, while the Chemin de fer du Bas Congo undertook to build a railway from Leopoldville to Katanga.
