The results of this care in manufacture will promptly be reflected when marketing your product in at least three ways,--first, increase of sales and repeat sales; second, a lowered overhead cost for servicing, repairing, and replacing defective machines, and third, a fairer and lower price to the consumer because it is based on the cost of her machine only since she is not burdened with a share of her neighbor's repairs in your "overhead." There is perhaps no household device operated by electricity that is more complicated in its oiling system than the old-fashioned sewing machine and yet the manufacturer managed to train the housewife to ninety per cent. efficiency in caring for the machine. Therefore, well defined and specified places for oiling should be provided for, and decalcomaniac or otherwise permanent directions placed on all enclosed gearings, in order that the user may continually have before her the correct places marked for oiling. It is not enough to supply a circular of directions: she loses it promptly as has been proved over and over again. All important service directions must be permanent. SOME NEEDS OF THE PRESENT AND THE FUTURE. It is largely because there has not been a consumer demand that was well defined that we find few equipments designed with attention to the proper working heights. Moreover, we are convinced that it is a decidedly difficult question to settle. However, it is possible to group most exertions that women must practice into two classes: those that involve upper arm muscles, as work at a sink, range, washtub, or washing machine, etc., and secondly, exertions that involve the muscles of the forearm, as the mixing, stirring, and beating involved in cookery processes. In the first case any variations in a woman's height makes comparatively little difference. A range of heights from five feet to six feet would be served equally well by a similar height of equipment. This makes it possible to lay down the rule that sinks should be designed and plumbers should provide for piping them at a height of thirty-five inches from the bottom of the sink to the floor. Ranges should be thirty-four inches in height to the working top, and both washing machines and tubs should be thirty-eight inches to their rims. This enables all work to be done with straight unstrained back.