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b. 35

composition: Op. 10 No 6, Etude in E♭ minor

..

A includes two unjustified naturals (cautionary?) before d1 and fbefore the chord in the middle of the bar. In a proofreading of FE (→GE,EE) the bottom accidental was removed.

category imprint: Differences between sources

issues: Cautionary accidentals

b. 36

composition: Op. 10 No 6, Etude in E♭ minor

..

A has a cautionary  before aand not before d1. The accidental before d1, which is more justified, was added in the last proofreading of FE (→EE), as well as in GE2 and subsequent GE,s. In the main text we omit the first of the aforementioned accidentals. 

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE

b. 36

composition: Op. 10 No 6, Etude in E♭ minor

..

In A the natural before the last semiquaver is written at least a third higher than the note.

category imprint: Source & stylistic information

issues: Accidental below/above the note

b. 38

composition: Op. 10 No 6, Etude in E♭ minor

..

In the second half of the bar A (→FEGE1GE1aGE2GE3) features accidentals effective from the first half— before c1 and  before a and f. Two first of these signs are also found in EE (in EE4 the last one was also added). These accidentals, unnecessarily written in by Chopin, were removed in GE4 (→GE5).

category imprint: Differences between sources

issues: EE revisions , GE revisions , Cautionary accidentals

b. 39

composition: Op. 10 No 6, Etude in E♭ minor

..

The cautionary flats before the octave in the L.H. and b in the R.H. were added in a proofreading of FE (→GE,EE). Chopin wrote the flat before g1 already in A

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE