The Art of Tying the Cravat: Demonstrated in Sixteen Lessons (1828).
I think he is calling married and old men lazy in this description, but I could be wrong.
For more on cravat styles:
Regency Fashion: Putting on a Cravat – Regency Reader (regrom.com)
Regency Fashion: The Cravat a l’Americaine – Regency Reader (regrom.com)
Regency Fashion: Cravate a la Byron – Regency Reader (regrom.com)
Regency Fashion: Cravate Sentimentale – Regency Reader (regrom.com)
Regency Fashion: The Cravate en Cascade – Regency Reader (regrom.com)
Regency Fashions: Cravate Mathematique – Regency Reader (regrom.com)
Regency Fashion: Cravate a la Maratte – Regency Reader (regrom.com)
Regency Fashion: Cravate a la Gastronome – Regency Reader (regrom.com)
Regency Fashion: Cravate de Chasse – Regency Reader (regrom.com)