nd in certain conditions can do as great damage as though the manufacturer had not spent the major sum to insure his rust-resisting container.

And a third point: sometimes a manufacturer neglects to make certain of a perfection of detail in the factory that will produce one hundred per cent. of uniformity in his product. Thus vacuum cleaner manufacturers, merely by installing an equipment that would measure for them, under actual conditions of service, the correct air displacement of the particular machine tested, could eliminate any possibility of lack of uniformity in their product. Further, it would take no more time for the inspection than is at present accorded to the routine reading of current consumption. Yet up to this time we know of no vacuum cleaner factory that has installed this comparatively simple and inexpensive equipment.

When attempting to market a product to women, factory faults are of far greater importance than when marketing a product for the use of men. The latter understand the difficulties of factory production and accept the occasional defective product as a routine. They expect it to be credited. They expect prompt correction on the part of the manufacturer or dealer, and, once adjusted, with them the matter usually ends. Not so with the average woman purchaser. First of all, and last of all, she remembers that something was the matter with the machine for which she paid her money. Oftentimes only the most drastic and unusual service on the part of the manufacturer will take away the sting that was left in her mind by the original transaction. In club, church, or in confidential chat at home, somewhere she leaves the impression that there is still something the matter or she would not hav