More than this, the vacuum-cleaner enables the worker to remove the dust from draperies without taking them down, to clean walls by a less arduous means than going over them with a cloth-wrapped brush or broom. Decidedly, one of the best investments a housekeeper can make is a good vacuum-cleaner; and she will find that it soon pays for itself in the amount of time and toil it saves. The work it takes a woman hours to accomplish is done by the vacuum-cleaner in a fraction of the time she would bestow on cleansing by the old methods, and more than one housekeeper has found that she saved the wages of an extra helper by the purchase of a vacuum-cleaner that she could handle herself. When such a cleaner is out of the question, a substitute for minor work in this line is a carpet-sweeper. True, it cannot go into corners and its accomplishment must be supplemented by a dust-pan and broom, but even so, it saves much stooping and struggle to the housekeeper. A trustworthy variety should be selected; it should be emptied regularly and kept in perfect working order. With this there should be provided what is known as a dustless mop--there are several makes of these--to use on the bare floors after the rugs have been treated by the sweeper. As a matter of course everything of this sort, as well as the use of a broom which raises dust, should be concluded before the housekeeper attacks the furniture with the brush for the upholstered pieces, a flannelette or cheese-cloth duster for the hardwood, or one of the so-called oiled dusters. Of these, too, a good choice is offered at house-furnishing establishments. While the cleaning goes on the windows should be open, but not in such a way as to blow the dust, and the doors into the other part of the house should be kept closed. The old method, still practised by untrained maids or by housekeepers whose zeal is in excess of their knowledge, of cleaning two or three rooms at once and driving the dust from one room to another should be entirely out of date in these sanitary days. The same sort of surface-cleaning should be followed throughout the house, in halls and chambers, as well as in the down-stairs rooms. Even in the tidiest household dust is likely to gather from day to day, and if neglected twenty-four hours its presence is unpleasantly conspicuous. This superficial care answers excellently for part of the time, but it is not sufficient without a more thorough attack at least once a week. The housekeeper need not follow the modes of her mother and grandmother and have the whole house swept from top to bottom on one day of the week, unless she finds, after study of ways and means, that this simplifies living for her. A better plan is to have one room or two done a day, so that the labor is lightened by being spread out through the week.