It would be recollected that the same question had been put to him here in Glasgow, as that which he had answered at Andover. "Why don't you go to the South?" He would tell his opponent on the present occasion, that even he could not advocate abolition sentiments in the South, purely and openly, without endangering his life. The reason he was able to express his views on slavery and remain unmolested, was because it was known that he denounced the abolitionists, and advocated colonization. The experience of Mr. Birney was in point. That gentleman hated slavery before he joined the abolitionists, and was in the habit of speaking against it, in connection with the colonization cause, and was permitted to do so without hindrance; but when he emancipated his slaves, and called upon others to do likewise, upon true anti-slavery principles, he was forced to fly from his residence and family, and was now in the city of Cincinnati. It had been tauntingly Said, "show us the fruits of your principles." "Where are the slaves you have liberated?" He would reply, that in Kentucky, very recently, nineteen slaves had been liberated upon anti-slavery principles:--enough to answer Mr. B's demand, "point us to _one_ slave your Society has been the means of liberating." But the question was not to be so tested. The abolitionists of Britain were often called upon in the same way; and their answer was, our principles are extending, and when they are sufficiently impressed upon the public mind, there will be a _general_ emancipation of the slaves. On the 31st of July, 1834, they could not point to any actually free in consequence of their efforts; but the night came and passed away, and the morrow dawned upon 800,000 human beings, lifted by the power of anti-slavery principles, out of the legal condition of chattels, into the position of free British subjects. So in the United States. The principles of abolition would necessarily be some time extending, but ultimately they would effect a change in public opinion, and a corresponding change in the treatment of the black man.