Book V. Duets up to the fourth and fifth positions, by

Hering, Mozart. Kreutzer, and H. Ries. (11805 s).

Book VA. Duets up to the fifth position, by J. S. Bach, Mozart, and Polledro. (11805 a).

Graduated Duets revised by Ernst Heim. Each book corresponds in difficulty with the same book of his Violin Studies “Gradus ad Parnassum”, see page 114, and his Violin and Piano pieces, “Palaestra”, see page 142.

=Dont.= 20 Exercices progressifs. Op. 38. (7605).

=Gurlitt.= Op. 105. Ouverture des Marionettes. (7596). Op. 137. “Commedietta” Ouverture. (7599).

=Hermann.= Op. 26. Morceaux mélodiques; Bks. 1, 2, 3. (Piano _ad lib_). (5328 a-c).

=Kayser, H. E.= Violin Studies, carefully revised, fingered, and with instructive annotations by Ernst Heim:—

36 elementary and progressive Studies (introductory to those of Kreutzer). Op. 20. Book 3. (5610 c).

=Molique, B.= 3 Duets. Op. 3. 3 Books. (10008 a-c).

=Mozart, W. A.= Op. 70. 12 Duets. 4 Bks.

=Pleyel, I.= Op. 23. Duos. (1085 d). — Op. 24. Duos. (1085 e). — Op. 44. Duos. (5628).

=Ries, H.= Progressive Duets, (Ernst Heim).