Third, little can be done at this stage by the amateur survey maker in recording the variables of the methods, and in making motion analysis charts. He may, however, make notes of methods that seem to him unusual or efficient. For example, if he observes two workers who seem physically much the same, and who have practically identical surroundings, and finds that one of these accomplishes more than the other, or is less fatigued, the difference is likely to lie in the motions or the methods used. These should be carefully noted. Such data as these will prove of value in the intensive studies of motions to be undertaken later. Variables that Affect Fatigue. We included in “Motion Study,”[4] a list of forty-two variables that affect motions. The list we use consists of one hundred and nineteen. We feel that our list is by no means complete. It is necessary only to note here that every possible change in the work, the worker, or the method has its effect upon the fatigue. This need not act as a deterrent from making changes. It need only act as a warning that no change made without a thorough consideration of every element of the problem can be of permanent value. The Survey Record Sheet. The survey maker will do well to list all of the things, which he intends to look for, upon one sheet, which he may use as a tentative record sheet. Such a sheet will prove itself an admirable record of how far advanced the organization is in fatigue elimination. The survey maker in any particular plant may modify it to suit individual conditions. The making of such a record sheet is most stimulating to the survey maker. He should make a collection of all the different survey sheets obtainable, even though used in the social or educational fields. He should be required to make at least a tentative sheet of his own. Through his attempts to do this, he will come, as in almost no other way, to a realization of the importance of the problem that is before him. Survey Photographs.