Here, now, is presented the key to the mystery overhanging the British West Indies. Men, high in station, have asserted that West India emancipation has been an economic success; while others, equally honorable, have maintained the opposite view. Both have presented figures, averred to be true, that seemed to sustain their declarations. This apparent contradiction is thus explained. The first take the aggregate production in the whole of the islands, which, they say, exceeds that during the existence of slavery;[70] the second take the production in Jamaica alone, as representing the whole; and, thus, the startling fact appears, that the sugar crop of the last three years in Jamaica, has fallen 63,603,000 lbs., below what it was during the first three years of freedom. This argues badly for the free negroes; but it must be the legitimate fruits of emancipation, as no exterior force has been brought into that island to interfere, materially, with its workings. In Mauritius, Trinidad, and British Guiana, it will be seen that the production has greatly increased; but from a very different cause than any improvement in the industry of the blacks who had received their freedom--the increase in Mauritius having been more than double what it had been when the production depended upon them. The sugar crop, in this island, for the three years preceding the introduction of immigrant labor, was but 217,200,000 lbs.; while, during the last three years, by the aid of 210,000 immigrants, it has been run up to 469,812,000 lbs. Taking all these facts into consideration, it is apparent that West India emancipation has been a failure, economically considered. The production in Jamaica, when it has depended upon the labor of the free blacks alone, has materially declined in some of the islands, since the abandonment of slavery, and is not so great now as it was during the first years of freedom; and, so far is it from being equal to what it was while slavery prevailed, and especially while the slave trade was continued, that it now falls short of the production of that period by an immense amount. In no way, therefore, can it be claimed, that the cultivation of the British West India islands is on the increase, except by resorting to the pious fraud of crediting the products of the immigrant labor to the account of emancipation--a resort to which no conscientious Christian man will have recourse, even to sustain a philanthropic theory. But the Island of Barbadoes is an exception. It is said to have suffered no diminution in its production since emancipation, and that this result was attained without the aid of immigrant labor. The _London Economist_ must be permitted to explain this phenomenon; and must also be allowed to give its views on the subject of the effects of emancipation, after the lapse of a quarter of a century from the date of the passage of the Emancipation Act: