It was a rule of the church that the consecration of metropolitans could not be completed without their receiving the gallium from the hands of the pope.
In neutral solutions, zinc gives a precipitate of gallium oxide.
INDIUM (symbol In, atomic weight 114.8), a metallic chemical element, included in the sub-group of the periodic classification of the elements containing aluminium, gallium and thallium.
But it is evident that the local particularism of the Lebanon was adverse to this union, and that even Gregory XIII., who sent the gallium to the patriarch Michael, and Clement VII.
These three he called ekaboron, ekaaluminium, and ekasilicon; and his prophecy was completely vindicated within fifteen years by the discovery of gallium in 1871, scandium in 1879, and germanium in 1886.
The gallium salts are precipitated by alkaline carbonates and by barium carbonate, but not by sulphuretted hydrogen unless in acetic acid solution.
Eucharistic or any other liturgical vestments were unknown until late in the 5th century, when certain bishops were honoured with the same gallium worn by civil officials (see Vestments).
The elements gallium and indium were discovered in blende.
The metal is obtained from zinc blende (which only contains it in very small quantity) by dissolving the mineral in an acid, and precipitating the gallium by metallic zinc. The precipitate is dissolved in hydrochloric acid and foreign metals are removed by sulphuretted hydrogen; the residual liquid being then fractionally precipitated by sodium carbonate, which throws out the gallium before the zinc. This precipitate is converted into gallium sulphate and finally into a pure specimen of the oxide, from which the metal is obtained by the electrolysis of an alkaline solution.
C. Eaton, Pellaea densa, Hook, Gallium kamtschaticum, Sletten.