Pontifex potestate ordinaria utitur, quando juris positivi dispositionem retinet....

Potestatem extraordinariam exserit, quando jus humanum non servat, ut si jus ipsum auferat, si 1egibus conciliorum deroget, privilegia acquisita immutet....

Plenitudo potestatis nullis publici juris regulis est limitata."-- Ibid., I, 333.] [Footnote 5208: Principal Concordats: with Bavaria, 1817; with Prussia, 1821; with Wurtemburg, Baden, Nassau, the two Hesses, 1821; with Hanover, 1824; with the Netherlands, 1827; with Russia, 1847; with Austria, 1855; with Spain, 1851; with the two Sicilies, 1818; with Tuscany, 1851; with Portugal (for the patronat of the Indies and of China), 1857; with Costa Rica, 1852; Guatemala, 1853; Haiti, 1860; Honduras 1861; Ecuador, Venezuela, Nicaragua and San Salvador, 1862.] [Footnote 5209: Bercastel et Henrion, XIII, 524.] [Footnote 5210: "Adstantibus non judicantibus."-- One of the prelates assembled at the Vatican, Nov.

20, 1854, observed that if the Pope decided on the definition of the Immaculate Conception...

this decision would furnish a practical demonstration...