The chief of these dissensions was the dispute with the Pope, which had occasioned, and continued to foster, so much scandal in the Gallican Church. We have mentioned already, that the Pope, refusing to consent to any alienation of his secular dominions, had been forcibly carried off from Rome, removed to Grenoble, then brought back over the Alps to Savona, in Italy. Napoleon, who denied that he had authorised this usage towards the father of the Church, yet continued to detain him at Savona. He was confined there until June, 1812. In the meantime, a deputation of the French bishops were sent with a decree by Napoleon, determining, that if his holiness should continue to refuse canonical institution to the French clergy, as he had done ever since the seizure of the city of Rome, and the patrimony of Saint Peter's, a council of prelates should be held for the purpose of pronouncing his deposition. On 4th September, 1811, the holy father admitted the deputation, listened to their arguments with patience, then knelt down before them, and repeated the psalm, _Judica me, Domine_. When the prelates attempted to vindicate themselves, Pius VII., in an animated tone, threatened to fulminate an excommunication against any one who should attempt to justify his conduct. Then, instantly recovering his natural benignity of disposition, he offered his hand to the offended bishops, who kissed it with reverence. The French prelates took leave sorrowfully, and in tears. Several of them showed themselves afterwards opposed to the views of Napoleon, and sustained imprisonment in consequence of their adhesion to what appeared to them their duty. The chemists of our time have discovered, that some substances can only be decomposed in particular varieties of gas; and apparently it was, in like manner, found that the air of Italy only confirmed the inflexibility of the Pope. [Sidenote: INTERVIEW WITH PIUS VII.]