These Etudes by Mazas (Op. 36 II) rank among the best material for practice which the literature of the violin possesses. They have become as indispensable for the development of violin-technique as the celebrated "Forty Etudes" by Kreutzer and the "Twenty-four Caprices" by Rode, for which they form an admirable preparation. They are usefu, not merely from a violinistic standpoint, but also in a musical sense. However, not all of them are of equal value. In order to save the pupil time and unnecessary labor, only the best of the exercises have been included in the present edition, and more especially thoe which promote the technical development of the fingers and the bow-hand. They have been arranged in systematic order, and especial care has been bestowed on the fingering, bowing, and the division of the bow.