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which was an attempt to overcome the familiar problem that spacings of frets<br />
which are optimal on one string do not suit adjacent strings. The theory underlying<br />
Salmon's Proposal will not be discussed here as the only relevance of the<br />
publication to this article is some tables which will be described below. Part III<br />
of Salmons Proposal explains The tables of proportions, calculated for the viol, and<br />
capable of being accommo<strong>da</strong>ted to all sorts of musick (the tables themselves are at<br />
the back of the book). The function of these tables, in Salmons words, is so<br />
that<br />
a man may without thinking perform his Musick in Perfect Proportions;<br />
the Mechanical Workman shall make them ready to his hand, so that he<br />
need only shift the upper part of his Finger-board as the Key requires 38<br />
This means that in order that every fret on every string should be always<br />
exactly in tune, an instrument-maker should equip the fingerboard with staggered<br />
fretting. Salmons Table 1 exemplifies this staggered fretting. For the top<br />
two strings the first fret is about 39.5 mm from the nut, for the third string 44<br />
mm, for the fourth and fifth 35 mm, and for the sixth string it is 39 mm from<br />
the nut. Salmon realises this will not work for different keys so he gives<br />
a Table of Proportions in every Key, that the Mechanick may accordingly<br />
make a sett of Finger-boards for each instrument, according to its<br />
particular length; the Proportions ever remaining the same though the<br />
size be various. 39<br />
In all, Salmon calculates fret spacings for fourteen keys, which will require<br />
seven fingerboards, so he provides seven tables. He is not totally committed to<br />
swappable fingerboards, and suggests that 'Makers of Instruments may find out<br />
some other way much more convenient'. Appended to the Proposal is a long<br />
commentary by the extremely distinguished mathematician John Wallis. Wallis<br />
suggests, as an alternative to swappable fingerboards, separate frets for each<br />
string 'to slide up and down in a Groove' with coloured-coded markings on the<br />
[23] fingerboard to show where they should be set. 40 Nevertheless, viol-players'<br />
hearts will sink at the thought of swapping the fingerboard or adjusting the<br />
frets whenever they play a piece in a different key. Salmon therefore adds an<br />
eighth table called Lyrick Harmony which he claims can be used for many keys<br />
by 'any person that uses a fretted instrument, either Lute, Viol, or Gittar'. 41<br />
For all the tables, the size of the pages in the Proposal means that spacings<br />
can be shown only for the first five frets, but calculations are given for the<br />
sixth and seventh. 42 The relevance of Salmons Proposal to this article is that his<br />
38 T. Salmon, A proposal to perform musick, in perfect and mathematical proportions (1688), 17.<br />
39 Ibid., 17-18.<br />
40 J. Wallis, Remarks on the Proposal (1687), 41. Players may be interested to know that<br />
Salmon demonstrated his system to the Royal <strong>Society</strong>, and Frederick and Christian Steffkin<br />
performed on instruments fitted with his stagger-fretted fingerboards, in June/July 1705: see<br />
L. E. Miller, 'John Birchensha and the Early Royal <strong>Society</strong>: Grand Scales and Scientific<br />
Composition, Journal of the Royal Musical Association 115 (1990), 63-79, at p. 78, n. 50. This<br />
would be an interesting experiment to repeat, perhaps on its 300th anniversary, at the same<br />
time comparing the swappable fingerboards with Wallis's alternative suggestion or new ideas<br />
from contemporary Mechanical Workmen.<br />
41 Salmon, Proposal, 25.<br />
42 Ibid., 27.