|UK Cadets with their Bugles|
By 1911 the university introduced a new way of letting students and faculty know it was time to change classes - a steam whistle. Apparently the whistle was so loud that it not only alerted UK students to changed classes but annoyed most of the citizens of Lexington. Nevertheless, the whistle continued its hourly alerts for 7 years.
In 1918 a new bell system was introduced to the campus which, I suspect, students, faculty, staff, and townspeople all welcomed!