In commenting upon the above Proclamation, an intelligent writer in the New-Orleans 'LIBERALIST' of March 15, 1830, very expressively remarks:--'Those who served in the memorable campaign of 1814 will know if the hero of the west was guilty of exaggeration. Just as fatal as was every glance of his keen eye to the English lines, so is every word of this Proclamation a killing thunderbolt to the detractors of this portion of our fellow beings, now so inhumanly persecuted.' Yes--when peril rears its crest, and invasion threatens our shores, then prejudice is forgotten and the tongue of detraction is still--then the people of color are no longer brutes or a race between men and monkeys, no longer turbulent or useless, no longer aliens and wanderers from Africa--but they are complimented as intelligent, patriotic citizens from whom much is expected, and who have property, home and country at stake! Ay, and richly do they merit this compliment. A respectable colored gentleman in the city of New-York, referring to this famous Proclamation, makes the following brief comment: 'When we could be of any use to the army, we possessed all the cardinal virtues; but now that time has passed, we forsooth are the most miserable, worthless beings the Lord in his wise judgment ever sent to curse the rulers of this troublesome world! I feel an anathema rising from my heart, but I have suppressed it.' How black is the ingratitude, how pitiful the hypocrisy, manifested in our conduct as a people, toward our colored population! Every cheek should wear the blush of shame--every head be bowed in self-abasement! From the organization of the American Colonization Society, down to the present time, the free people of color have publicly and repeatedly expressed their opposition to it. They indignantly reject every overture for their expatriation. It has been industriously circulated by the advocates of colonization, that I have caused this hostility to the African scheme in the bosoms of the blacks; and that, until the Liberator was established, they were friendly to it. This story is founded upon sheer ignorance. It is my solemn conviction that I have not proselyted a dozen individuals; for the very conclusive reason that no conversions were necessary. Their sentiments were familiar to me long before they knew my own. My opponents abundantly overrate my influence, in acknowledging that I have overthrown, in a single year, the concentrated energies of the mightiest men in the land, and the perpetual labors of fifteen years. They shall not make me vain. Such a concession affords substantial evidence of perverted strength and misapplied exertion.