A photograph is one of the most satisfactory survey records. It is not always easy to get such a photograph. In the first place the survey maker is not sure what should be photographed. In the second place the worker is not always eager that he or his work place should be photographed. This is even more true of the management than of the men. Some managers are not willing to allow their work places to be photographed, when they realize that such photographs will live as “before and after” records. Where photographs can be taken, they are the ideal records, in that they are accurate, detailed, unprejudiced, easily understood, easily preserved, and constantly available. We have found the photograph the most valuable of records, and have used it continuously since 1892. On every side we find that scientists are more and more realizing the importance of the photograph record. A trained photographer often has the desirable qualities to become an admirable survey maker. The motion picture film makes it possible to record activity as well as rest. Making the Survey Serviceable. Such photographs form an important element in making the survey serviceable. The survey is an admirable record to use after improvements have been made, to show exactly what the trend of progress has been. It is, however, most important, as furnishing the working data from which the actual improvements are made immediately. To be serviceable, then, the survey must do certain things: 1. It must make it possible for any one studying it actually to realize existing conditions. It is apparent what a help the photographs are in thus visualizing the problem. 2. It must emphasize those conditions that require immediate and great improvement. These can be shown most plainly by photographs, but it must be remembered that a photograph without a proper written explanation often means but a small portion of what it should to a man who has not himself seen the conditions. 3. It must be in such form that it can be easily followed or studied. This will be assured if the plan has been properly made, and if the plan outlined has been consistently followed. The observations should be grouped. The groups should be put under appropriate headings. The order should be excellent. It will help greatly if partial and final summaries are included.