French cellist Felix Battanchon (April 9, 1814-1893) was one of the venerated teachers at the Paris Conservatory.
Battanchon wrote many etude collections, including 12 Etudes in Thumb Position, Op. 25, 6 Etudes Without Thumb, Op. 4, 6 Etude-Caprices, Op. 5, and 6 Etudes, Op. 56. Unjustly neglected, these etude collections are valuable teaching material.