First of all, it is physically impossible for a county superintendent to visit and supervise one hundred and fifty teachers at work in as many different schools scattered over four or five hundred square miles of territory. If he were to devote all his time to visiting country schools, he would have only one day to each school per year. When it is remembered that the county superintendent must also attend to an office that has a large amount of correspondence and clerical work, that he is usually commissioned with authority to oversee the building of all schoolhouses in his county, that he must act as judge in hearing appeals in school disputes, that he must conduct all teachers' examinations and in many instances grade the papers, and, finally, that country roads are often impassable, it is seen that his time for supervision is greatly curtailed. As a matter of fact some rural schools receive no visit from the county superintendent for several years at a time. A still further obstacle comes from the fact of the frequent changes of teachers among rural schools. A teacher visited by the county superintendent in a certain school this term, and advised as to how best to meet its problems, is likely to be in a different school next term, and required to meet an entirely new set of problems. This is all very different from the problem of supervision met by the town or city superintendent. For the town or city district is of small area, and the schools few and close together. If the number of teachers is large, the superintendent is assisted by principals of different schools, and by deputies. The teaching force is better prepared, and hence requires less close supervision. School standards are higher, and the cooeperation of patrons more easily secured. The course of study is better organized, the schools better graded and equipped, and all other conditions more favorable to efficient supervision. It would not, therefore, be just to compare the results of supervision in the country districts with those in urban schools without making full allowance for these fundamental differences.