[11] Id. pp. 23-25.
[12] See Gottfried Weber, op. cit., pp. 39-41, and Ernst H. and Wilhelm Weber, op. cit. p. 522, end of § 285.
[13] See A. Ganot, Elementary Treatise on Physics, translated by E. Atkinson (16th ed., London, 1902), p. 266, § 282, “In the horn different notes are produced by altering the distance of the lips.” Such a vague and misleading statement is worse than useless. See also Poynting and Thomson, op. cit. p. 113.
[14] “Le Cor,” p. 22; p. 11, § 18; pp. 6 and 7, § 8.
[15] The phraseology alone is here borrowed from Sedley Taylor, (op. cit. p. 55), who does not enter into the practical application of the theory he expounds so clearly.
[16] See Dr Emil Schafhäutl’s article on musical instruments, § iv. of Bericht der Beurtheilungs Commission bei der Allg. Deutschen Industrie Ausstellung, 1854 (Munich, 1855), pp. 169-170; also F. Zamminer, op. cit.
[17] The measurements are for the high philharmonic pitch a’=452.4. V. Mahillon, “Le cor” (p. 32), gives a table of the lengths of crooks in metres.
[18] Robert Eitner, editor of the Monatshefte für Musikwissenschaft, published therein an article in 1881, p. 41 seq., “Wer hat die Ventiltrompete erfunden,” in which, after referring to the Klappenwaldhorn and Trompete (keyed horn and trumpet) made by Weidinger and played in public in 1802 and 1813 respectively, he goes on to state that Schilling in his Lexicon makes the comical mistake of looking upon the Klappentrompete (keyed trumpet) and Ventiltrompete (valve trumpet) as different instruments. He accordingly sets matters right, as he thinks, by according to Weidinger the honour of the invention of valves, hitherto wrongfully attributed to Stölzel; and in the Quellenlexikon (1904) he leaves out Stölzel’s name, and names Weidinger as the inventor of the Klappen or Ventil, referring readers for further particulars to his article, just quoted, in the Monatshefte.
[19] See Hector Berlioz, A Treatise on Modern Instrumentation and Orchestration, translated by Mary Cowden Clarke, new edition revised by Joseph Bennett (1882), p. 141.
[20] See Victor Mahillon, Catal. descriptif des instruments de musique, &c., vol. ii. p. 388, No. 1156, where an illustration is given. See also Dr August Hammerich (French translation by E. Beauvais), “Über altnordische Luren” in Vierteljährschrift für Musik-Wissenschaft x. (1894).