The Violin. George Hart
NICCOLÒ AMATI. Grand Pattern. Date 1641. (J. S. COOKE, ESQ.) Plate II.
This mode of cutting is constantly met with in the works of the Brescian makers, and likewise in those of the early Cremonese. Andrea Amati invariably adopted this form. Stradivari rarely cut his wood slab-form. Joseph Guarneri made a few Violins of his best epoch with this cutting, the varnish on which is of an exquisite orange colour, so transparent that the curls of the wood beneath resemble richly illuminated clouds.
There can be no doubt whatever that the Cremonese and Brescian makers were exceedingly choice in the selection of their material, and their discrimination in this particular does not appear to have risen so much from a regard to the beauty as to the acoustic properties of the wood, to which they very properly gave the first place in their consideration. We have evidence of much weight upon this interesting question in the frequent piecings found on the works of Cremona makers, pointing to a seeming preference on their part to retain a piece of wood of known acoustic properties rather than to work in a larger or better preserved portion at the probable expense of tone. The time and care required for such a delicate operation must have been sufficient to have enabled the maker, had he been so minded, to have made a complete instrument. There is also ample proof that Joseph Guarneri possessed wood to the exceptional qualities of which he was fully alive, and the same may be said of Stradivari, Ruggeri, and others. It is scarcely reasonable to suppose that in the seventeenth century there was a dearth in Italy of timber suitable for the manufacture of Violins, and that in consequence these eminent makers were compelled to patch and join their material to suit their purpose. They were men who were in the enjoyment of a patronage certainly sufficient to enable them to follow their calling without privation of any kind. Scarcity of pine and sycamore, good or bad, could not have been the cause, since we find Italian cabinet-work of great beauty that was manufactured at this same period. The plane-tree and pine used by the Amati, Stradivari, and the chief masters in Italy, was usually of foreign growth, and was taken from the Tyrol and Istria. Its value was, therefore, in advance of Italian wood, but hardly so much as to place it beyond the reach of the Cremonese masters. It is, further, improbable that these masters of the art should have expended such marvellous care and toil over their work, pieced as it frequently was like mosaic, when for a trifling sum they could have avoided such a task to their ingenuity by purchasing fresh wood. We are therefore forced to admit that there must have been some cause of great weight which induced them to apply so much time and labour, and that the problem can only be accounted for by the solution before proposed, viz., that external appearance was of less importance than the possession of acoustic properties thoroughly adapted to the old makers' purpose, and that the scarcity of suitable wood was such as to make them hoard and make use of every particle. The selection of material was hence considered to be of prime importance by these makers; and by careful study they brought it to a state of great perfection. The knowledge they gained of this vital branch of their art is enveloped in a similar obscurity to that which conceals their famous varnish, and in these branches of Violin manufacture rests the secret of the Italian success, and until it is rediscovered the Cremonese will remain unequalled in the manufacture of Violins.
We may now pass to the consideration of the various constituent parts of a Violin. It will be found, if a Violin be taken to pieces, that it is constructed of no less than fifty-eight separate parts, an astonishing number of factors for so small and simple-looking an instrument. The back is made of maple or sycamore, in one or two parts; the belly of the finest quality of Swiss pine, and from a piece usually divided; the sides, like the back, of maple, in six pieces, bent to the required form by means of a heated iron; the linings, which are used to secure the back and belly to the sides, are twelve in number, sometimes made of lime-tree, but also of pine. The bass or sound-bar is of pine, placed under the left foot of the bridge in a slightly oblique position, in order to facilitate the vibrating by giving about the same position as the line of the strings. The divergence is usually one-twelfth of an inch, throughout its entire length of ten inches. It is curious to discover that this system of placing the bar was adopted by Brensius of Bologna, a Viol-maker of the fifteenth century, and by Gasparo da Salò. The later Violin-makers, however, for the most part, do not appear to have followed the example, they having placed it in a straight line, thus leaving the system to be re-discovered. The bar of the Violin not only serves the purpose of strengthening the instrument in that part where the pressure of the bridge is greatest, but forms a portion of the structure at once curious and deeply interesting; it may indeed be called the nervous system of the Violin, so exquisitely sensitive is it to external touch. The slightest alteration in its position will effect such changes in the tone as often to make a good Violin worthless. Those troublesome notes technically known as "wolf notes" by its delicate adjustment are sometimes removed, or passed to intervals where the disagreeable sound is felt with less intensity. Numerous attempts have been made to reduce these features to a philosophy, but the realisation of the coveted discovery appears as distant as ever. The most minute variation in the construction of the instrument necessitates a different treatment of this active agent as regards its conjunction with the bridge; and when it is considered that scarcely two Violins can be found of exactly identical structure, it must be admitted that the difficulties in the way of laying down any set of hard and fast rules for their regulation seem to be insuperable.
The next important feature of the internal organism is the sound-post, which serves many purposes. It is the medium by which the vibratory powers of the instrument are set in motion; it gives support to the right side of the belly, it transmits vibrations, and regulates both the power and quality of tone. The terms used for this vital factor of a Violin on the Continent at once prove its importance. The Italians and French call it the "Soul," and the Germans the "Voice." If we accept the bass-bar as the nervous system of a Violin, the sound-post may be said to perform the functions of the heart with unerring regularity. The pulsations of sound are regulated by this admirable contrivance. If mellowness of quality be sought, a slight alteration of its position or form will produce a favourable change of singular extent; if intensity of tone be requisite, the sound-post is again the regulator. It must, of course, be understood that its power of changing the quality of the tone is limited in proportion to the constitutional powers of the instrument in each case. It is not pretended that a badly constructed instrument can be made a good one by means of this subtle regulator, any more than a naturally weak person can be made robust by diet and hygiene.
The position of the sound-post is usually one-eighth to three-eighths of an inch behind the right foot of the bridge, the distance being variable according to the model of the instrument. If the Violin be high-built, the post requires to be nearer the bridge, that its action may be stronger; whilst flat-modelled instruments require that the post be set further away from the bridge. It is not possible to have any uniform arrangement of the sound-post in all instruments; as we have remarked before in reference to the bass-bar, the variations in the thickness, outline, model, &c., of the Violin are so frequent as to defy identity of treatment; uniformity has been sought for, but without success.
The post can only be adjusted by a skilful workman, who either plays himself or has the advantage of having the various adjustments tested by a performer. The necessity of leaving this exceedingly delicate matter in practised hands cannot be too strongly impressed upon the amateur, for the damage done in consequence of want of skill is often irreparable.
There are two methods of setting the sound-post in the instrument: the first fixes it in such a position as to place the grain of the post parallel with the grain of the belly; the second sets it crosswise.
The next important feature to be mentioned is the bridge, which forms no small part of the vibrating mechanism of the instrument, and needs the utmost skill in its arrangement. Its usual position is exactly between the two small niches marked in each sound-hole, but this arrangement is sometimes altered in the case of the stop being longer or shorter. Many forms of bridges have been in use at different periods, but that now adopted is, without doubt, the best. In selecting a bridge great care is requisite that the wood be suitable to the constitution of the Violin. If the instrument is wanting in brilliancy, a bridge having solidity of fibre is necessary; if wanting in mellowness, one possessing soft qualities should be selected.
We now pass to the neck of the Violin, which is made of sycamore or plane-tree. Its length has been