﻿used 
  in 
  playing 
  Brass 
  Instruments. 
  

  

  389 
  

  

  Experimental 
  Results. 
  Tenor 
  Trombone. 
  — 
  The 
  instru- 
  

   ment 
  used 
  for 
  these 
  experiments 
  is 
  in 
  B^ 
  by 
  Millereau 
  & 
  Co. 
  

   of 
  Paris, 
  and 
  was 
  throughout 
  played 
  by 
  E. 
  H. 
  Barton 
  with 
  a 
  

   Higham 
  mouthpiece. 
  

  

  The 
  mean 
  results 
  of 
  scales 
  and 
  exercises 
  over 
  two 
  octaves 
  

   tried 
  on 
  it 
  at 
  different 
  intensities 
  are 
  given 
  in 
  Table 
  II., 
  and 
  

   graphically 
  exhibited 
  in 
  Plate 
  VII. 
  The 
  ordinates 
  of 
  the 
  curves 
  

   are 
  the 
  manometer 
  pressures 
  in 
  centimetres 
  of 
  water, 
  and 
  the 
  

   abscissae 
  represent 
  the 
  intervals 
  in 
  cents, 
  the 
  intonation 
  being 
  

   assumed 
  in 
  equal 
  temperament. 
  

  

  Both 
  in 
  the 
  table 
  and 
  on 
  the 
  Plate 
  the 
  C 
  in 
  square 
  

   brackets 
  is 
  the 
  middle 
  C 
  between 
  the 
  staves, 
  and 
  is 
  of 
  

   frequency 
  about 
  269 
  complete 
  vibrations 
  per 
  second. 
  

  

  Table 
  

  

  II.- 
  

  

  —Pressures 
  for 
  Scales 
  < 
  

  

  ml 
  

  

  rom 
  

  

  bone. 
  

  

  

  

  Notes 
  

  

  F 
  

  

  G 
  A 
  

  

  1 
  

  

  Bb 
  C 
  

  

  D 
  

   4 
  

  

  E 
  

   2 
  

  

  1 
  

  

  a 
  

  

  4 
  

  

  A 
  

  

  2 
  

  

  1 
  

  

  [C] 
  

  

  

  

  3 
  

  

  D 
  

  

  1 
  

  

  E 
  

   2 
  

  

  F 
  

   1 
  

  

  Positions 
  ) 
  

   of 
  Slide, 
  j 
  

  

  6 
  

  

  4 
  

  

  2 
  

  

  1 
  

  

  6 
  

  

  ~f~ 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  Mean 
  of 
  "1 
  

  

  4 
  sets. 
  J 
  

  

  18 
  

  

  26 
  

  

  32 
  

  

  37 
  

  

  40 
  

  

  47 
  

  

  53 
  

  

  58 
  

  

  65 
  

  

  73 
  

  

  80 
  

  

  88 
  

  

  108 
  

  

  117 
  

  

  122 
  

  

  m. 
  

  

  

  Mean 
  of 
  1 
  

  

  11 
  sets. 
  ] 
  

  

  17 
  

  

  23 
  

  

  " 
  

  

  31 
  

  

  34 
  

  

  42 
  

  

  51 
  

  

  52 
  

  

  57 
  

  

  63-7 
  

  

  64-2 
  

  

  71 
  

  

  76 
  

  

  81 
  

  

  90 
  

  

  P- 
  

  

  

  

  

  

  

  

  

  

  

  Mean 
  of 
  1 
  

   4 
  sets. 
  J 
  

  

  13 
  

  

  17 
  

  

  22 
  

  

  27 
  

  

  27-5 
  

  

  35 
  

  

  42 
  

  

  39 
  

  

  44 
  

  

  48 
  

  

  45-5 
  

  

  52 
  

  

  59 
  

  

  65 
  

  

  74 
  

  

  The 
  results 
  of 
  experiments 
  on 
  given 
  notes 
  sounded 
  in 
  close 
  

   succession 
  but 
  with 
  different 
  intensities 
  are 
  given 
  in 
  Table 
  III. 
  

   (p. 
  390). 
  

  

  The 
  experiments 
  as 
  to 
  change, 
  if 
  any, 
  of 
  pressure 
  with 
  

   change 
  of 
  fingering 
  are 
  detailed 
  in 
  Table 
  IV. 
  (p. 
  390). 
  

  

  Comet. 
  — 
  These 
  experiments 
  were 
  made 
  with 
  a 
  Higham 
  

   Cornet 
  played 
  by 
  a 
  professional 
  trumpeter 
  and 
  cornettist, 
  

   Mr. 
  E. 
  0. 
  Pickerill 
  of 
  Nottingham. 
  The 
  results 
  for 
  scales 
  

   over 
  two 
  octaves 
  soft, 
  medium, 
  and 
  loud, 
  each 
  played 
  once 
  

   only, 
  are 
  shown 
  by 
  the 
  three 
  curves 
  on 
  Plate 
  VIII. 
  marked 
  

   respectively 
  p, 
  m, 
  and 
  /. 
  The 
  C 
  in 
  square 
  brackets 
  denotes 
  

   the 
  middle 
  between 
  the 
  staves. 
  The 
  abscissae 
  and 
  ordinates 
  

   are 
  as 
  in 
  Plate 
  VII. 
  

  

  