Note 5 — Section 180. A LETTER FROM DR. HENRY DANSON TO MR. JOHN FORSTER, ON CHARLES DICKENS’S SCHOOL-LIFE. II.
Reading edition
must — acquired = he must have acquired. To acquire, sich erwerben, insep. comp. str. v. refl.; by, durch; ‘long’, here langjährig; after — school = after his school-time.