An interesting phase of the mental hygiene movement is the relation which it has been shown to hold to the field of industry. It must be admitted that this is an intensely practical question. We even have a Journal of Industrial Hygiene, which has been published successfully now for some time. The mere taking of intelligence tests for industrial purposes is only an incident. The important thing, as shown by Cobb,[53] is the prevention of mental disorder by bringing about a proper relation of the worker to his environment and the elimination of causes of discontent. Beyond this there is, of course, the early treatment of individuals before the opportunity of bringing about a proper adjustment has been lost for all time. Cobb[54] suggests that, above all, the physician must "forget orthodox psychiatry (as the economist seems to be forgetting cut-and-dried political economy) and interest himself in a dynamic, individual psychology which recognizes the essentials of human nature and at last begins to analyze for us the elements of which human nature really consists, looking on each case as a human experiment in reaction to environment." There would appear to be no limit to the possibilities of the mental hygiene movement. Perhaps no more comprehensive summary of its objects and purposes can be given at this time than that contained in a definition recently formulated by Southard:[55] "To stem the tide of syphilis, to wage war on alcohol, to counsel against marriage of defectives, to generalize the insane hospitals, to specialize the general hospitals, to weed defects out of general school classes, to open out the shut-in personality, to ventilate sex questions, to perturb and at the same time reassure the interested public—these are infinitives that belong perhaps in a rational movement for mental hygiene. They are things the past has taught us more or less clearly to do and in that sense the movement for mental hygiene is surely not much more than the elaboration of the obvious."