In 1860, Henry N. Hooper and Company of Boston cast and installed 16 bells weighing an aggregate of over 8 tons at the cost of $6,000. The bells have an unusual form, adopting the proportions of Spanish bells, which are longer in the waist and produces the sounds of the minor third in the harmonics instead of the major third that is commonly used. Each bell is inscribed with the name of its donor and the third bell, tuned to F-sharp, is the Brown University Bell, which was presented by John Carter Brown of the University's Class of 1816. This bell was presented on the condition that the chimes would be rung on the morning and afternoon of every Commencement Day. Thus far, the bells have played the Brown "Alma Mater" each year for well over 100 years.