ABSTRACT
In a pedagogical method which is experimental the education of the senses must undoubtedly assume the greatest importance. Experimental psychology also takes note of movements by means of sense measurements. Pedagogy, however, although it may profit by psychometry is not designed to measure the sensations, but educate the senses. Psychometric instruments, or better, the instruments of esthesiometry, are prepared in their differential gradations upon the laws of Weber, which were in truth drawn from experiments made upon adults. An intelligent teacher ought to be able to make most interesting individual psychological observations, and, to a certain point, should be able to measure the length of time for which the various stimuli held the attention. In fact, when the child educates himself, and when the control and correction of errors is yielded to the didactic material, there remains for the teacher nothing but to observe.
