Excepting the marine trumpet or bowed monochord, we find in Europe no trace of any large bowed instruments before the ap pearance of the viols, the bowed instruments of the middle ages being all small enough to be rested on or against the shoulder dur ing performance. The viols probably owe their origin directly to the minnesinger fiddles, which possessed several of the typical fea tures of the violin, as distinct from the guitar family, and were sounded by a bow. These in their turn may be traced to the "gui tar fiddle" (q.v.), a bowed instrument of the 13th century.
The parentage of the fiddle family may safely be ascribed to the rebec, a bowed instrument of the early middle ages, with two or three strings stretched over a low bridge, and a pear-shaped body pierced with sound-holes, having no separate neck, but nar rowed at the upper end to provide a finger-board, and (judging by pictorial representations, for no actual example is known) sur mounted by a carved head holding the pegs, in a manner similar to that of the violin. The bow, which was short and clumsy, had a considerable curvature.
So far it is justifiable to trace back the descent of the violin in a direct line ; but the earlier ancestry of this family is largely a matter of speculation. The best authorities are agreed that stringed instruments in general are mainly of Asiatic origin, and there is evidence of the mention of bowed instruments in Sanskrit documents of great antiquity. Too much genealogical importance has been attached by some writers to similarities in form and con struction between the bowed and plucked instruments of ancient times. They probably developed to a great extent independently,
and the bow is of too great and undoubted antiquity to be regarded as a development of the plectrum or other devices for agitating the plucked string. The two classes of instrument no doubt were under mutual obligations from time to time in their development.
The chief defect of the viols was their weakness of tone ; this the makers thought to remedy in two ways : first by additional strings in unisons, fifths and octaves ; and secondly by sympathetic strings of fine steel wire, laid under the finger-board as close as possible to the belly, and sounding in sympathy with the notes produced on the bowed strings. This system of reinforcement was applied to all the various sizes of viols.
The improvements which resulted in the production of the violin proceeded on different lines. They consisted in increasing the reso nance of the body of the instrument, by making it lighter and more symmetrical, and by stringing it more lightly. These changes transformed the body of the viol into that of the violin, and the transformation was completed by rejecting the lute tuning with its many strings, and tuning the instrument by fifths, as the fiddle had been tuned. The tenor viol appears to have been the first instru ment in which the change was made, and thus the 'viola or tenor may probably be claimed as the father of the modern violin family.