Bosworth Sevcik for Cello - Op. 1, Part 1 (Thumb Placing Exercises) Music Sales America Series by Otakar Sevcik

These exercises lead the student through the various thumb positions and, by constant use of the fourth finger, strengthen it and give it security in the higher positions.

Indeed, the book deals with all the technical difficulties in connection with the placing of the thumb, providing exercises which will help cellists to overcome these difficulties.