[1] See _Allg. musik. Ztg._ (Leipzig, 1821), Bd. xxiii. pp. 369-374.
The cheng was made known in France by Pere Amiot, who published a
careful description of the instrument in _Memoire sur la musique des
Chinois_, p. 80 seq., with excellent diagrams.
[2] Ib., Bd. xxv. p. 152.
[3] The essay was published in _Acta Acad. Petrop._ (1780).
[4] "Essai sur la naissance et sur la formation des voyelles" in
Rozier's _Observations sur la physique_ (Paris, 1782), _Supplement_,
xxi. 358 seq.,, with two plates. The description of the instrument
begins on p. 374, S xxii.
[5] See "Uber die Erfindung der Rohrwerke mit durchschlagenden
Zungen," by Wilke, in _Allg. musik. Ztg._ (Leipzig, 1823), Bd. xxv.
pp. 152-153 and Bd. xxvii. p. 263; also Thos. Ant. Kunz,
"Orchestrion," id., Bd. i. p. 88 and Bd. ii. pp. 514, 542; and Dr
Karl Emil von Schafhautl, _Abt Georg Joseph Vogler_ (Augsburg, 1888),
p. 37.
[6] _Data zur Akustik, eine Abhandlung vorgelesen bey der Sitzung der
naturforschenden Freunde in Berlin, den 15ten Dezember 1800_
(Offenbach, 1801); also published in _Allg. musik. Ztg._ (1801), Bd.
iii. pp. 517, 533, 565. See also an excellent article by the Rev. J.
H. Mee on Vogler in Grove's _Dictionary of Music and Musicians_.
[7] See _Data zur Akustik_, and a pamphlet by Vogler, "Uber die
Umschaffung der St Marien Orgel in Berlin nach dem Voglerschen
Simplifikations-System, eine Nachahmung des Orchestrion" (Berlin);
also "Kurze Beschreibung der in der Stadtpfarrkirche zu St Peter zu
Munchen nach dem Voglerschen Simplifikations-System neuerbauten
Orgel" (Munich, 1809).
[8] See _Allg. musik. Ztg._ (1823), Bd. xxv. pp. 153 and 154 note,
and 117-118 note.
[9] A description of Malzel's panharmonicon before the addition of
the clarinet and oboe stops with free reeds is to be found in the
_Allg. musik. Ztg._ (1800), Bd. ii. pp. 414-415.
[10] In the article in Grove's _Dictionary_ the screen is said to
have been in the wind-trunk.
[11] See _Allg. musik. Ztg._ Bd. iii. p. 523.
[12] See J. B. Biot, _Precis elementaire de physique experimentale_
(Paris, 1817), tome i. p. 386, and his _Traite de physique_ (Paris,
1816), tome ii. p. 172 et seq., pl. ii.; "Uber die Crescendo und
Diminuendo Zuge an Orgeln," by Wilke and Kaufmann, _Allg. musik.
Ztg._ (1823), Bd. xxv. pp. 113-122; and _Allg. musik. Ztg._ Bd.
xxiii. pp. 133-139 and 149-154, with diagrams on p. 167 which are not
absolutely correct in small details.
[13] J. B. Biot, _Traite_, tome ii. p. 174.
[14] _Harmonie universelle_ (Paris, 1636), livre v., prop. xxxv.
[15] _Wien. musik. Ztg._ Bd. v. Nos. 39 and 87.
[16] _Allg. musik. Ztg._ Bd. xxii. p. 505, and Bd. xxxv. p. 354.
[17] Id. Bd. viii. pp. 526 and 715.
[18] Id. Bd. xi. p. 625.
[19] _Allg. musik. Ztg._ Bd. ii. p. 767, and _Wien. musik. Ztg._ Bd.
i. No. 501.
[20] Id. Bd. xxxi. p. 489.
[21] Id. Bd. xxxiv. pp. 856 and 858; and _Cacilia_, Bd. xiv. p. 259.