It is well known that in his entertaining book on travels in the West-Indies and Spanish Main, Mr. Trollope undertakes to prove that emancipation has both ruined the commercial prosperity of the British islands and degraded the free blacks to a level with the idle brute. Mr. Trollope is still firm in this opinion, notwithstanding the statistics of the Blue Book, which prove that these colonies never were in so flourishing a condition as at present. We, in America, have also had the same fact demonstrated by figures, in that very plainly written book called the _Ordeal of Free Labor_. Mr. Trollope, no doubt, saw some very lazy negroes, wallowing in dirt, and living only for the day, but later developments have proved that his investigations could have been simply those of a dilettante. It is highly probable that the planters who have been shorn of their riches by the edict of Emancipation, should paint the present condition of the blacks in any thing but rose-colors, and we, of course, believe that Mr. Trollope _believes_ what he has written. He is none the less mistaken, if we are to pin our faith to the Blue Book, which we are told never lies. And yet, believing that emancipation has made a greater brute than ever of the negro, Mr. Trollope rejoices in the course which has been pursued by the home government. If both white man and black man are worse off than they were before, what good could have been derived from the reform, and by what right ought he to rejoice? Mr. Trollope claims to be an anti-slavery man, but we must confess that to our way of arguing, the ground he stands upon in this matter is any thing but _terra firma_. Mr. Trollope was probably thinking of those dirty West-India negroes when he made the following comments upon a lecture delivered by Wendell Phillips: 'I have sometimes thought that there is no being so venomous, so bloodthirsty, as a professed philanthropist; and that when the philanthropist's ardor lies negro-ward, it then assumes the deepest die of venom and bloodthirstiness. There are four millions of slaves in the Southern States, none of whom have any capacity for self-maintenance or self-control. Four millions of slaves, with the necessities of children, with the passions of men, and the ignorance of savages! And Mr. Phillips would emancipate these at a blow; would, were it possible for him to do so, set them loose upon the soil to tear their masters, destroy each other, and make such a hell upon earth as has never even yet come from the uncontrolled passions and unsatisfied wants of men.'