Transcriber's Note:

The following is a list of corrections made to the original. The first passage is the original passage, the second the corrected one.

• Page 3:
  Quartet-paper: four stave score, no brackets
  Quartet-paper: four-stave score, no brackets
• Page 35:
  Leger-lines,
  Leger-lines.
• Page 40:
  case the notehead of shorter duration must be
  case the note-head of shorter duration must be