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190 The Audio-Visual Handbook
The majority of the motion-picture subjects which were available eight or ten years ago were designed primarily for the junior and senior high-school level. More recently many subjects have been prepared especially for use in college classes, including a liberal supply of technical subjects for advanced and graduate groups. The excellent series of instructional sound films which has been produced by Erpi in co-operation with the University of Chicago is but one example of the trend toward more effective teaching methods in the colleges and universities. Lecturers who come before college groups are finding illustrative materials of various kinds to be extremely helpful. The majority of those traveling lecturers who meet college audiences regularly are using objective illustrations. The lecture which is advertised as being "illustrated" will draw two or three times as great an audience as another lecture of similar quality and importance without the added interest of projected pictures.
Although it is likely that leading high schools are using sound and audio-visual aids more extensively than the average college, it is also likely that the average college is using these aids in a greater variety of ways than the high school. One of the most recent developments among colleges, which is a rather direct result of earlier music appreciation work among elementary schools and later among high schools, is the somewhat widespread attention that is being given to music appreciation. Some colleges have established music libraries which contain books and other publications, but the more important equipment is a very complete collection of phonograph records. These music libraries include in their equipment record-playing devices and listening rooms where students may go to hear the finest of recorded music. In some instances, record albums are available for loan to students very much as books, pamphlets, etc., are provided. This rapidly developing interest in good music among college students has caused the Carnegie Foundation to establish a fund to be used in providing music libraries and facilities for those schools which demonstrate sufficient interest by first building their own libraries of recorded music and providing opportunities for student participation. The interesting phase of this new development is that it is being used by law students, engineers, medical students and those in advanced college courses almost as much as it is used by students in the fine arts departments.
The need for sound-distribution equipment is not as great in colleges as in high schools, although some colleges are finding the equipment to be extremely useful. Sound amplification equipment is almost a necessity in the college auditorium and equipment for recording