The spot is more interesting to the Christian world as the prison of SS. Peter and Paul, who are said to have been bound for nine months to a pillar, which is shown here. A fountain of excellent water, beneath the floor of the prison, is attributed to the prayers of St. Peter, that he might have wherewith to baptize his gaolers, Processus and Martinianus; but, unfortunately for this ecclesiastical tradition, the fountain is described by Plutarch as having existed at the time of Jugurtha's imprisonment This fountain probably gave the dungeon the name of _Tullianum_, by which it was sometimes known, _tullius_ meaning a spring.[49] This name probably gave rise to the idea of its connection with Servius Tullius. It is hence that the Roman Catholic Church believes that St. Peter and St Paul addressed their farewells to the Christian world. That of St. Peter:-- "Shortly I must put off this my tabernacle, even as our Lord Jesus Christ hath showed me. Moreover I will endeavour that ye may be able after my decease to have these things always in remembrance. For we have not followed cunningly devised fables, when we made known to you the power and coming of our Lord Jesus Christ.... Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness."--_2nd St. Peter._ That of St. Paul:-- "God hath not given us a spirit of fear.... Be not thou, therefore, ashamed of the testimony of our Lord, nor of me his prisoner; but be thou partaker of the afflictions of the gospel according to the power of God.... I suffer trouble as an evil doer, even unto bonds; but the word of God is not bound. Therefore I endure all things, for the elect's sake, that they also may obtain the salvation which is in Christ Jesus.... I charge thee by God and by the Lord Jesus Christ, who shall judge the quick and the dead ... preach the word; be instant in season, out of season; reprove, rebuke, exhort with all long-suffering and doctrine; ... watch in all things, endure afflictions, do the work of an evangelist, make full proof of thy ministry. For I am now ready to be offered, and the time of my departure is at hand. I have fought a good fight, I have finished my course, I have kept the faith."--_2nd Timothy._ On July 4, the prisons are the scene of a picturesque solemnity, when they are visited at night by the religious confraternities, who first kneel and then prostrate themselves in silent devotion. Above the Church of S. Pietro in Carcere, is that of _S. Giuseppe del Falegnami_, St. Joseph of the Carpenters.