258 Chemical Nomenclature of Berzelius. 
Cobaltic oxide. Protoxide of cobalt. 
Cobaltic superoxide. Peroxide of cobalt. 
Cobaltic acid.(26) 
Ferrous oxide.(27) Protoxide of iron. 
Ferric oxide. Peroxide of iron. 
Manganous oxide.(28) Protoxide of manganese. 
Manganic oxide. Deutoxide of manganese. 
Manganic superoxide. Peroxide of manganese. 
Manganic acid.(29) Manganeseous acid. 
Oxymanganic acid.(30) Manganesic acid. 
Cerous oxide.(31) _ Protoxide of cerium. 
Ceric oxide. Deutoxide of cerium. - 
Zirconic oxide, (zirconia. ) Oxide of zirconium. 
Thoric oxide, (thorina.)(32) Oxide of thorinium. 
Yttric oxide, (yttria.) Oxide of yttrium. 
Glucinic oxide, (glucina.) Oxide of glucinium. 
Aluminic oxide, (alumina.) Oxide of aluminium. 
Magnesic oxide, (magnesia.) Oxide of magnesium. 
Calcic oxide, (lime.) Protoxide of calcium. 
(26) Cobaltic acid is obtained in combination with ammonia, when that alkali is 
added to the nitrate of cobalt— Trans. 
(27) The black oxide of iron, considered as a combination of the black and red 
oxides, Berzelius calls ferroso-ferric oxide. In thus adopting the Latin termination 
for the first of the two names, he takes a liberty not sanctioned in his own remarks, 
as given by the French translator, but in which he is abundantly borne out by anal- 
ogy. This subject is again referred to, in note 73. 
(28) The red oxide Berzelius calls manganoso-manganic oxide. The names of 
these oxides are derived from that for manganese, stated by the author to be used by 
the German chemists, viz. manganium. This name prevents confusion between 
magnesium and its compounds, and manganesium and its combinations. Its use 
abbreviates the names of the oxides and of the acids of manganese.— Trans. 
(29) The manganic acid, obtained by calcining together the peroxide of manga- 
‘nese and the hydrate or nitrate of potassa, forms salts, which, according to Mitscher- 
lich, are isomorphous with the sulphates and chromates. Hence Berzelius infers 
that it contains three times the quantity of oxygen which exists in manganous ox- 
ide.—Trans. 
(30) Oxymanganic acid remains in solution when a strong acid is added to a dis- 
solved manganate: its salts are isomorphous with the oxychlorates.— Trans. 
(31) There is a combination of these two oxides, termed by Berzelius ceroso-ceric 
oxide.— Trans. 
(32) Not in the original table, having been discovered since the publication of the 
first volume: it is described in Vol. II. This oxide was found by Berzelius, in a min- 
eral from Norway, named thorite, which contains 57 per cent. of the earth.— Trans. 
