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Pitch

b. 3

composition: Op. 10 No 1, Etude in C major

No F1 in CLI

Octave in FE (→GE,EE

..

The lack of the lower octave in CLI is certainly an oversight. See bars 4-11.

category imprint: Differences between sources

issues: Errors of CLI

b. 4

composition: Op. 10 No 1, Etude in C major

e1 in CLI

d1 in FE (→GE,EE

..

It is not entirely clear whether e1 on the 13th semiquaver in CLI is an error of the copyist or the original version of this place. Reasons for the second possibility include the appearance of ein analogous bar 52. 

category imprint: Differences between sources

b. 4-11

composition: Op. 10 No 1, Etude in C major

..

In CLI all octaves in bars 4-11 (and many subsequent ones) are briefly written with the use of the 8 digit under the upper notes. In FE the notation was used only in the case of the quavers in bar 5 and the entire bar 6 (originally probably also in bars 7-8 and subsequent ones), while in GE1 of bars 6-8.

category imprint: Corrections & alterations; Source & stylistic information

issues: Abbreviated octaves' notation

b. 5

composition: Op. 10 No 1, Etude in C major

b3 in CLI & EE

a3 in FE (→GE)

..

The b3 note on the last semiquaver of CLI and EE could be easily considered as a mistake except for the fact that in analogous bar 53 the sources have the same text. Therefore, it cannot be excluded that in CLI we are dealing with the original version, while in EE with the editor's revision.

category imprint: Differences between sources

issues: EE revisions , Errors in EE , Main-line changes , Errors of CLI

b. 6-7

composition: Op. 10 No 1, Etude in C major

..

The sharp in front of fin bar 6 is present only in EE, while the  in front of ain bar 7 appears only in the later impressions and editions (EE4 and all GE,s except for GE1). Moreover, in CLI there is no  in front of f1 in bar 6. Those discrepancies does not influence the reading of the text, yet they result from the gradually specified rules governing the accidentals.

category imprint: Source & stylistic information

issues: EE revisions , Accidentals in different octaves , GE revisions