The clergy of Philadelphia, unwilling to leave the cause of the Bible in this plight, demanded that I should discuss the question with Dr. Berg, a minister in whom they had great confidence. I yielded to the demand, and the discussion took place in Concert Hall, in January, 1854. The hall was crowded every night. One very wet and stormy night, the number present was only 2000, but every other night it was from 2250 to 2400. A Philadelphia newspaper of that period says, "We cannot forbear to notice the contrast in the manner and bearing of the two disputants. Mr. Barker uniformly bore himself as a gentleman, courteously and respectfully towards his opponent, and with the dignity becoming his position, and the solemnity and importance of the question. We regret we cannot say the same of Dr. Berg, who at times seemed to forget the obligations of the gentleman, in his zeal as a controversialist. He is an able and skilful debater, though less logical than Mr. Barker; but he wasted his time and strength too often on personalities and irrelevant matters. His personal inuendoes and offensive epithets, his coarse witticisms and arrogant bearing, may have suited the vulgar and intolerant among his party, but they won him no respect from the calm and thinking portion of the audience; while we know that they grieved and offended some intelligent and candid men who thoroughly agreed with his views. It is time that Christians and clergymen had learned that men whom they regard as heretics and infidels have not forfeited all claims to the respect and courtesies of social life by their errors of opinion, and that insolence and arrogance, contemptuous sneers and impeachment of motives and character towards such men, are not effective means of grace for their enlightenment and conversion. "There was a large number of men among the audience who lost their self-control in their dislike of Mr. Barker's views, and he was often interrupted, and sometimes checked in his argument, by hisses, groans, sneers, vulgar cries, and clamors, though through all these annoyances and repeated provocations, he maintained his wonted composure of manner and his clearness of thought. On the other hand, Dr. Berg was heard with general quiet by his opponents, and greeted with clamorous applause by his friends." I am afraid the above remarks were true. Still, Dr. Berg was almost a gentleman compared with Dr. McCalla, and he was vastly more of a scholar and debater, far as he was from being a model disputant.