'On one hundred leagues of the African coast,' says Mr. B., 'it is already to a great degree suppressed' by the operation of the colonization societies and their colonies. To this the Emancipator says, 'These statements are far, very far from true, and we can account for them only on the ground of "unpardonable ignorance, or a purpose to mislead." Again and again have we been assured, and on colonial colonization authority too, that the trade still goes on in the vicinity of the colony as briskly as ever, nay, that it is even prosecuted within the limits of the colony, and in sight of Monrovia itself. Indeed, at this very moment the colony, instead of being able to suppress or destroy the trade, is in danger of being itself destroyed by it, and is sending out its appeal to this country for help, praying that some "American vessels" may be sent upon the coast to seize the traders, and to protect the colony. Let our friends in this country and in England peruse the following extracts from the Liberia Herald just received in this country, and then say what shall be thought of the man or the men who, in the face of such and similar testimony repeatedly received, can unblushingly pretend "that on one hundred leagues of the African coast, the trade is already to a great degree suppressed?" Extracts from late Liberia papers, received at the office of the N. Y. Commercial Advertiser:-- "_Slave Trade._--This nefarious traffic is again lifting its horrid head in our vicinity, and increasing in a fearful ratio. Within one hundred miles of the settlement, there are at this very time, at least _four_ factories for the purchase of slaves, and one of them not more than eighteen miles off! The consequences are most severely felt by the colony. It is now impossible to purchase rice, at any rate that would not starve the most fortunate man. In our immediate vicinity, it is reported, slavers have lately given the natives a musket for four cross! the retail price of which, in the colony, is six dollars! To the Spaniards, in view of a successful voyage, the profits of which are so enormous, goods are of no value; but it is far otherwise with us. The natives, like other men, disposed to get the most for their articles, will of course sell to those who will give the highest. This being the case, we ask, _how are the people of this colony to live_? We have sometimes thought if the people of the United States once knew the _inconvenience_ to which the slave trade subjects us, and what an _effectual check_ it is upon the advancement and prosperity of the colony, and how little of those surplus and useless millions, whose proper place of deposite has created so much contention, that without an exception, saints and sinners, politicians, philosophers, colonizationists, and abolitionists, anti-colonizationists, anti-abolitionists, and