In the case of the experiment stations, the decision in regard to the purchase of books in most instances rests entirely with the director or the heads of the departments. This plan, too, has its disadvantages. The ambitious specialist allowed to have his own way without regard to the needs of his fellow workers is apt to purchase books of service only to himself. If there is a library committee for the institution, it would be far better to have the book purchases for the station considered by the committee on the basis of a general policy taking into account the special requirements of the station's work and funds. If there is no library committee, then the librarian of the college should by all means be consulted in regard to the purchase of all books for the station as well as the college. It should, of course, be understood by the librarian, as well as by other officers of the institution, that purchases of books and periodicals for the experiment station under the Hatch Act should be strictly confined to those required in connection with the work of the station and under the Adams act to those directly relating to the approved project of research. It will, therefore, be necessary for the station director to pass on the extent of the library purchases from station funds and the character of the books and periodicals to be thus purchased. Among the functions, problems and opportunities of the librarians of our agricultural colleges, extension work remains to be considered. The extension work of the agricultural college is now one of its vital activities and is every year enlarging its scope. Leaders are needed for every phase of this work,--for correspondence schools, for farmers' institutes, for movable schools of agriculture, for work on practice farms, and in many other of the activities which are being used in carrying the improved methods of modern agriculture to the farmer himself. The experiment station is an organized effort of science to improve agriculture, and the extension work of the agricultural college is the practical means of reaching the farmer with useful information. The rural problem is one of the burning public questions of the day and upon its proper solution depends much of the progress which we confidently expect. The farmer must himself co-operate in the solution of this problem and the leadership is of a very high order that recognizes as an absolute essential to success, and succeeds in enlisting, an active participation on the part of the farmer in the work of bringing about an improved practice of agriculture. If then the library is as important in all the phases of the work of the agricultural college as we deem it to be, the work of the library should by all means be represented in all the extension work activities.