One thing, and only one thing, will turn the household into the channels where every other occupation has made advancement. This is the establishment of a great professional school, amply equipped for the investigation of all matters pertaining to the household and _open only to graduates of the leading colleges and universities of the country_. This work cannot and should not be done by the college. The college offers courses in physiology and hygiene, but the college graduate is permitted to practice medicine only after a long and thorough course in a medical school. The college offers courses in constitutional law, but the college student is admitted to the bar only after technical training in the law school. The college offers courses in chemistry and economics, but the college student who expects to have the care of a home should prepare herself for this work by technical study of all that concerns the household. The mechanical parts of housekeeping can be learned in the home, providing the head of the household herself understands the intricacies of the mechanism over which she has charge, and has the gift of imparting knowledge. These assumptions, however, cannot always be made, nor can it be assumed that even all the mechanical parts of housekeeping can be learned in any single home any more than that all forms of library work can be learned from a single library. Some of these mechanical parts of housekeeping can be learned in the kitchen-garden, the public school, the cooking school, but progress is never made by treadmill methods, by mechanical repetition, by giving attention only to those things already known. Professional training and investigation must supplement home and collegiate instruction in the case of the housekeeper, as the professional school supplements private and collegiate instruction for the physician, the lawyer, and the clergyman.