_Friday, July 21._--Went at half-past ten to the Bishop of Langres, who told us of the new concordat between the Pope and the Czar, which would appear to recognise the authority of the Roman Catholic Bishops much more than the French government does. He seemed to think it a great gain. M. des Billiers then took us to the Père de Ravignan: we found M. l'Abbé de Casalès, Member of the National Assembly, with him, and had a lively conversation for about half an hour. Le Père de Ravignan and M. de Casalès both maintained that Mr. Newman's theory of developement was open ground. "Tout chemin mène à Rome," said the latter. "I know, by experience, how hard a matter it is to attain to the truth--that it is long in coming. It is the grace of God--not study, brings it. Thus, we have every feeling of charity for the great movement in England." They did not appear to think that Mr. Newman's theory and that of Cardinal Bellarmine intercepted each other; and as we were five, there was no good opportunity of setting forth our conception on that point. Le Père de Ravignan has the most pleasing and attaching demeanour of any person I have met with--he seems the Manning of France. He begged us warmly to come to-morrow, any time from seven to twelve A.M.; assuring us that he did not think it lost time to converse with us. He spoke with great respect of Dr. Pusey. M. des Billiers then took us to Les Missions Etrangères, Rue du Bac. One of the professors accompanied us to La Salle des Martyrs; round this apartment are ranged pictures by Chinese Christians, representing the martyrdoms of Monseigneur Borie, M. Cornay, and the tortures inflicted on native Christians; against one side are five cases, with glass fronts; that in the centre contains the nearly complete skeleton of M. Borie: on each side are the bones of M. Cornay, and M. Jaccard; those of a native Chinese priest, a martyr, and reliques of S. Prosper, sent from Rome. On the opposite side is a long case containing memorials of different martyrs: chains, a letter written by M. Borie under sentence of death, his stole, parts of the cangue of native priests martyred, and also in a case the complete cangue of M. Borie, a frightful instrument of torture when fixed to the neck, and carried day and night, as it was by him under sentence of death, from July to November, 1838. The young missionaries make a visit here every evening, and pray before these relics of their brethren, soliciting their intercession,--a fitting preparation, I thought, for so difficult a task. Over the door was a print "of the seventy servants of God," martyred in Cochin China and those parts in the last few years.