Recognition of this truth is behind the very general movement, both here and abroad, to provide the best possible conditions both in the factories and the home environment of workers. Employers are coming more and more to un- <p 122> derstand that conservation of physical forces means maximum output. The foundation, of course, is a clean, spacious, well-lighted, and perfectly ventilated factory in a situation which affords pure air and accessibility to the homes of employees. In England and Germany the advance towards this ideal has taken form in the ``garden cities'' of which the plant is the nucleus and the support. In America there is no lack of industrial towns planned and built as carefully as the works to which they are tributary. Some have added various ``welfare'' features, ranging from hot luncheons served at cost, free baths, and medical attendance to night schools for employees to teach them how to live and work to better advantage. The profit comes back in the increased efficiency of the employees. _Even though the health be perfect and the attitude of attention be sustained the will is unable to retain concentration by an effort for more than a few seconds at a time_. When the mind is concentrated upon an <p 123> object, this object must develop and prove interesting, otherwise there will be required every few seconds the same tug of the will. This concentration by voluntary attention is essential, but cannot be permanent. To secure enduring concentration we may have to ``pull ourselves together'' occasionally, but the necessity for such efforts should be reduced. This is accomplished by developing interest in the task before us, through application of the fundamental motives such as self-preservation, imitation, competition, loyalty, and the love of the game. If the task before me is essential for my self-preservation, I shall find my mind riveted upon it. If I hope to secure more from speculation than from the completion of my present tasks, then my self-preservation is not dependent upon my work and my mind will irresistibly be drawn to the stock market and the race track. If I wish my work to be interesting and to compel my undivided attention, I should then try to make it appeal to me as of more importance than anything <p 124> else in the world. I must be dependent upon it for my income; I must see that others are working and so imitate their action; I must compete with others in the accomplishment of the task; I must regard the work as a service to the house; and I must in every possible way try to ``get into the game.'' _This conversion of a difficult task into an interesting activity is the most fruitful method of securing concentration_. Efforts of will can never be dispensed with, but the necessity for such efforts should be reduced to the minimum. The assumption of the attitude of attention should gradually become habitual during the hours of work, and so take care of itself.