The Violoncello and Its History by Wilhelm Joseph von Wasielewski.
"In the following pages I present to the musical world the History of the Violoncello and Violoncello playing. I have preceded it by the History of the Viola da Gamba, for the reason that this instrument must be considered the precursor of the Violoncello. For my work I have made use of the musical dictionaries extant, especially Gerber’s old and new musical Lexicon as well as Fétis’s “Biographie Universelle des Musiciens.”"
The history of the Violoncello and Violoncello playing is connected in its early stages up to a certain point with that of the Viola da Gamba and its forerunner, “the Basso di Viola,” of the sixteenth century. This last-named instrument formed the bass in the string quartets of that time, to which also belonged, according to the Italian designation, the “Discant-Viola” or “Violetta,” as well as the “Viola d’Alta” and “di Tenore.”