number, 2 Basses, 2 Tenors, 2 Trebles, all truly proportionally suited."

When the term refers to instruments, they are generally similar in make, tone, power, relative size (proportional), wood type, and color. In terms of size, the bass viol's string length should be exactly twice that of the treble viol's. The similarity required of the viols in a chest of viols usually meant that they were made by the same maker, and sometimes were ordered in sets. Similar viols were desirable because they would blend