It has already been pointed out that the viola da gamba, which for nearly three hundred years (for the “Basso di viola,” or Gerle’s “great violin,” was, in fact, a gamba, although as yet of a somewhat primitive form) had played an important part both as an orchestral and solo instrument, was replaced by the violoncello in the course of the eighteenth century. Subsequently when the violin as a leading instrument in melody usurped the place of the cornet (Zinken), and the discant viola (French par dessus de viole), it became necessary to provide an equivalent for the bass part of string quartets, as the tone of the gamba in _ensemble_ playing proved too weak and thin in proportion to the violin. Mattheson says of it, in his “Neu eröffneten Orchestre,” which appeared in 1713: “The plaintive Viola da gamba (Fr., Basse de Viole, properly so called) is a beautiful delicate instrument, and he who wishes to signalise himself on it must not keep his hands long in his pockets.... Its chief use in concerts is only for the strengthening of the basses, and some indeed pretend to execute a ‘Thorough Bass’ on it, of which, up to now, I have never seen a good attempt.” In opposition to this last somewhat sarcastic remark of Mattheson is what Gerber states a hundred years later (Vol. I., p. 6, of his “New” Musicians’ Lexicon) concerning the gamba. He there says: “It is remarkable in the history of music that his (Abel’s) instrument was buried with him in the year 1787 in total oblivion: the indispensable gamba, without which for a hundred years neither church nor chamber music could be arranged, which in all public and private concerts had the exclusive right to be heard before all other instruments from the beginning to the end, and which therefore, like caskets, must not only be exquisitely finished in every size, large and small, but was also ordered, bought, and paid for adorned with the most costly artistic carving--ivory, tortoiseshell, gold, and silver--then available. In the course of time there will be no vestige left in the whole of Europe of this instrument, once so universal and admired; henceforth it will have to be sought for amongst the old woodcuts in Prätorius, or specimens of it, stringless and worm-eaten, in a royal music chamber. Another sad proof how greatly Apollo is overruled by the goddess Fashion. The taste of our forefathers for these soft, modest, humming viola tones is also remarkable; they were a quiet, contented, peace-loving people! In the present time the instruments for our musicians cannot be chosen sufficiently high and shrill.”[42] It is plain that although Gerber himself played the cello, this instrument was also known to him, and he had not only remarked the disproportion between the tone of the violins and those of the gambas in the orchestra with regard to strength, but also the circumstance that, by the creative faculty of Haydn and Mozart in the region of higher instrumental music, the gamba had become