The late MR. SAMUEL BLACKWELL, a highly respected citizen of Jersey city, opposite the city of New York, and a member of the Presbyterian church, visited many of the sugar plantations in Louisiana a few years since: and having for many years been the owner of an extensive sugar refinery in England, and subsequently in this country, he had not only every facility afforded him by the planters, for personal inspection of all parts of the process of sugar-making, but received from them the most unreserved communications, as to their management of their slaves. Mr. B., after his return, frequently made the following statement to gentlemen of his acquaintance,--"That the planters generally declared to him, that they were _obliged_ so to over-work their slaves during the sugar-making season, (from eight to ten weeks,) as to use _them up_ in seven or eight years. For, said they, after the process is commenced, it must be pushed without cessation, night and day; and we cannot afford to keep a sufficient number of slaves to do the _extra_ work at the time of sugar-making, as we could not profitably employ them the rest of the year." It is not only true of the sugar planters, but of the slaveholders generally throughout the far south and south west, that they believe it for their interest to wear out the slaves by excessive toil in eight or ten years after they put them into the field.[4] [Footnote 4: Alexander Jones. Esq., a large planter in West Feliciana, Louisiana, published a communication in the "North Carolina True American," Nov. 25, 1838, in which, speaking of the horses employed in the mills on the plantations for ginning cotton, he says, they "are much whipped and jaded;" and adds, "In fact, this service is so severe on horses, as to shorten their lives in many instances, if not actually kill them in gear." Those who work one kind of their "live stock" so as to "shorten their lives," or "kill them in gear" would not stick at doing the same thing to another kind.] REV. DOCTOR REED, of London, who went through Kentucky, Virginia and Maryland in the summer of 1834, gives the following testimony: "I was told confidently and from _excellent authority_, that recently at a meeting of planters in South Carolina, the question was seriously discussed whether the slave is more profitable to the owner, if well fed, well clothed, and worked lightly, or if made the most of _at once_, and exhausted in some eight years. The decision was in favor of the last alternative. That decision will perhaps make many shudder. But to my mind this is not the chief evil. The greater and original evil is considering the _slave as property_. If he is only property and my property, then I have some right to ask how I may make that property most available." "Visit to the American Churches," by Rev. Drs. Reed and Mattheson. Vol. 2 p. 173.