322 On Mr. IV. Hawkes’s Patent Organs and Piano-Fortes. 
of this system, which you will oblige him and me, by in- 
serting in your Magazine. ~ 
It may be necessary to point out, that only the 17 sounds 
(or 18 by repeating the octave} which are placed in the 
first range of column 2, are found on Mr. Hawkes’s instru- 
ments, although they are furnished with 24 strings or pipes, 
as many as Mr. Loeschman has, but who, by his more 
numerous pedals, renders them all effective. 
Mr. Loeschman has adopted the Mean-Tone System, 
with the major Thirds perfect, the beats of which system, 
as far as 12 notes, are given bv Mr. Smyth in your last 
volume, p. 436: but in applying which to Mr. L.’s vingt- 
quatreave, all the Jarge numbers. of beats, for the wolves, 
must be omitted, and other numbers of beats calculated 
and used in their stead. Ata future time I hope, that my 
friend Mr. Smyth will give a supplement to his mean-tone 
Table, for supplying this defect to those possessed of and 
wishing to tune Mr. L.’s instruments: as also to those, 
who by means of the beats, may be desirous of contrasting 
the merits and defects of these two patent inventions for 
improved Tempered Scules.—Vhe Rev. Mr. Liston’s patent, it 
will be observed, embraces a very different object, that of ren-. 
dering all temperament unnecessary, and his present instrus 
ment, by means of 20 pipes (producing 60 sounds. in each 
ectave, by help of 10 pedals) certainly goes much nearer to 
his object than Mr. Hawkes has approached his; but Mr.’ 
Liston’s pipes must be increased to 24 and his pedals to 
12 (as he proposes to do on future Instruments, if desired) 
to be enabled to produce perfect harmony to the same ex- 
tent of modulation, as Mr. Loeschman’s instruments, as 
now made, are capable of rendering, truly tempered scales, 
according to the mean tones, to Dr.Smith’s Equal Harmony, 
or any other regular system of temperament whatever; and 
so that no wolf or substituted note shall occur, through 
33 keys: a point gained, which certainly would have asto- 
nished and delighted the late Dr. Smith (to whom we owe 
al] accurate temperament), compared with the Instraments 
he was able to produce or procure fer his Tempered Seales. 
It will be observed, that only the 12 ordinary finger-keys 
in use, are used in any of these three patent instruments : 
to each of the inventors of these I profess myself a well- 
wisher, as far as they obtain their respective objects, and 
are disposed to pursue the same, with fairness and liberality 
towards:the others, and am, sir, your obedient servant, 
Westminster, April 13, 1811. Joun Farey. 
: Mr. Hawkes’s 
