Stains can be removed from marble, by oxalic acid and water, or oil of vitriol and water, left on fifteen minutes, and then rubbed dry. Gray marble is improved by linseed-oil. Grease can be taken from marble, by ox-gall and potter's clay wet with soapsuds, (a gill of each.) It is better to add, also, a gill of spirits of turpentine. It improves the looks of marble, to cover it with this mixture, leaving it two days, and then rubbing it off. Unless a parlor is in constant use, it is best to sweep it only once a week, and at other times use a whisk-broom and dust-pan. When a parlor with handsome furniture is to be swept, cover the sofas, centre table, piano, books, and mantelpiece, with old cottons, kept for the purpose. Remove the rugs, and shake them, and clean the jambs, hearth, and fire-furniture. Then sweep the room, moving every article. Dust the furniture, with a dust-brush and a piece of old silk. A painter's brush should be kept, to remove dust from ledges and crevices. The dust-cloths should be often shaken and washed, or else they will soil the walls and furniture when they are used. Dust ornaments, and fine books, with feather brushes, kept for the purpose. CHAPTER XXX. ON THE CARE OF BREAKFAST AND DINING-ROOMS. An eating-room should have in it a large closet, with drawers and shelves, in which should be kept all the articles used at meals. This, if possible, should communicate with the kitchen, by a sliding window, or by a door, and have in it a window, and also a small sink, made of marble or lined with zinc, which will be a great convenience for washing nice articles. If there be a dumb-waiter, it is best to have it connected with such a closet. It may be so contrived, that, when it is down, it shall form part of the closet floor.