nature could endure no more, when she uttered a wild shriek, and casting on her tormentor a look of unutterable agony, exclaimed, "Oh, mistress, I am dying." This appeal arrested her attention, and she soon left the room, but in the same spirit with which she entered it. The girl survived but a few days, and, I believe, saw her mistress _no more_" Mr. GEORGE A. AVERY, an elder of a Presbyterian church in Rochester, N.Y., who lived some years in Virginia, gives the following: "The manner of treating the sick slaves, and especially in _chronic_ cases, was to my mind peculiarly revolting. My opportunities for observation in this department were better than in, perhaps, any other, as the friend under whose direction I commenced my medical studies, enjoyed a high reputation as a _surgeon_. I rode considerably with him in his practice, and assisted in the surgical operations and dressings from time to time. In confirmed cases of disease, it was common for the master to place the subject under the care of a physician or surgeon, at whose expense the patient should be kept, and if death ensued to the patient, or the disease was not cured, no compensation was to be made, but if cured a bonus of one, two, or three hundred dollars was to be given. No provision was made against the _barbarity_ or _neglect_ of the physician, &c. I have seen _fifteen or twenty of these helpless sufferers_ crowded together in the true spirit of slaveholding inhumanity, like the "brutes that perish," and driven from time to time _like_ brutes into a common yard, where they had to suffer any and every operation and experiment, which interest, caprice, or professional curiosity might prompt,--unrestrained by law, public sentiment, or the claims of common humanity." Rev. WILLIAM T. ALLAN, son of Rev. Dr. Allan, a slaveholder, of Huntsville, Alabama, says in a letter now before us: "Colonel Robert H. Watkins, of Laurence county, Alabama, who owned about three hundred slaves, after employing a physician among them for some time, ceased to do so, alleging as the reason, that it was cheaper to lose a few negroes every year than to pay a physician. This Colonel Watkins was a Presidential elector in 1836." A.A. GUTHRIE, Esq., elder in the Presbyterian church at Putnam, Muskingum county, Ohio, furnishes the testimony which follows.