Viola

Chambers's Encyclopaedia, Volume 10: Swastika to Zyrianovsk and Index, p. 486

Viola, also called ALTO VIOLA, or TENOR VIOLIN, a larger description of violin, to which the part between the second violin and bass is generally assigned. It has four gut strings, the two lower covered with silvered copper wire. It is tuned in fifths, the first or upper string sounding A on the second space of the treble clef, and the others the D, G, and C successively below. The compass is from the latter note to about C on the second ledger-line above the treble clef; and the music is generally written on the alto clef, or on the G clef if high.

Source scan(s): p. 0513