It was drawing to an end now; but the evening was even warm, and I sat at work in the schoolroom (1) with the window open. (Jane Eyre)
Presently the chambers gave up their fair tenants one after another: each came out gaily and airily, (2) with dress that gleamed lustrous through the dusk. (Jane Eyre)
The two prepositional phrases each have (1) a small clause (Bas Aart’s term), (2) a noun and the relative. How do you call these in grammatical terms?