Abstract: The metre employed in this descriptive and satirical poem, and the system of its rhymes, are studied in a quantitative manner and positioned in relation to those in other poems by Raymond Roussel. The complex structure of the mounting of its parentheses and the repetitive forms of its poetic lists are identified and analysed. A reminder of the versification theories current at the time allows for a demonstration of the formal singularities of one of the most baroque of twentieth-century poetic monuments.