Note 4 — Section 24. THE WINKING[1] EYELID.
Reading edition
[1] Das Öffnen und Schließen der Augenlider.
[2] ‘The — one’, say ‘The opening and closing of the eyelid (pl.) is of great importance.
[3] outside window = street window.
[4] trübe.
[5] Ladenhüter; supply the adv. ‘therefore’ after the verb ‘cleans’, and place the object last of all.
[6] ‘must — them’, say ‘must (dürfen) never suffer (erleiden) even (selbst) the smallest speck, the least dimness (Trübung).
[7] das sich öffnende und schließende Augenlid; ‘apprentice’, here Ladenbursche.
[8] but — day, nein, den ganzen Tag hindurch.
[9] Augenglas.
[10] genau betrachtet; the subject should be placed immediately after the conjunction ‘that’; little = not much; to be badly off, schlimm daran sein.
[11] who — moment, welche Augen und Gesicht jeden Augenblick baden und waschen.