This 42-page book was published in 1947 for the fortieth anniversary of Huysmans' death. It is a collection of twelve pieces Langé wrote on various aspects of Huysmans' life and work:

Vue de la ruelle des Reculettes (1929)

Etymologie de Croulebarbe

La Bièvre en peinture

En marge des 'Croquis parisiens'

Rabelais chez l'Oblat

Les Origines de 'Durtal'

Huysmans et le Mancenillier

Huysmans, locataire des Prémontrés

D'une virgule d'or et du mot 'thymiame'

Divagations sur le Quartier Saint-Severin

Dernier dimanche, rue Monsieur

A la Messe de 1941

This copy is signed by Langé himself and dedicated to the French academic and scholar C. A. Burns.