"NEGRO REPOSITORY.--The undersigned has, at a very considerable expense, erected, and fitted up in a style of comfort and convenience, a commodious two-story building on Union-street, second door east of Church-street, for the safe keeping and accommodation of negroes, both male and female (the apartments being entirely separate), which are brought to this market for sale. This building is admirably adapted to the object proposed, having airy and pleasant rooms, and every convenience which could be desired, besides large yards, _walled in high_, a capacious cistern, &c. which, whilst they secure the comfort of the negro, likewise guarantee the most ample security for his safe keeping. "In addition to boarding negroes for sale, the undersigned proposes keeping on hand from time to time, for sale, such negroes as may be in demand in this market, embracing every description of house and field-hands, male and female, young and old, that may be called for, and upon terms entirely accommodating. "Besides the boarding and the selling of negroes, he will also make exchanges, giving or receiving such boot as the difference in age, character, qualifications, and appearance may notify. "The highest cash market prices paid for negroes of both sexes at all times. WM. W. HALL." "CASH FOR NEGROES.--I will pay the highest cash for likely young negroes of both sexes, from 10 to 30 years of age. All those that have such to dispose of would do well to give me a call before selling. I will also attend to shipping of negroes to any of the Southern ports, free of charge, when left with me; _as I have a private jail for the safe keeping of servants_. For further information, inquire at my office at Union Hotel, Union-street, or through the post-office. G. W. APPERSON." The following is taken from a New Orleans paper:-- "SLAVE DEPOT.--J. Buddy.--Slave-yard and boarding-house, 159, Gravier-street, second door from Carondelet. "House-servants and field-hands for sale at all times. Slaves will be received on board or sold on favorable terms. The building is a large three-story brick house, and _very commodious as a slave depot_. Particular attention will be paid to the health and cleanliness of all slaves placed in this yard." From the "Missouri Republican," St. Louis, July 13, 1849:--