There's the person, and what, in relation to the person, subsists with regard to the poem --surely, Schuyler's telling us, it's highly "personal," near-to-hand, your damn phone, fer crissake. Or a lit cigarette you forget you're holding. Thus, the little retardation that's the speaker checking out his animal persona: "You can see: buildings, dogs, people, | cement, etc. The summer city, where, | I suppose, someone is happy. Someone." The verse assumes the retard. Now they're a pair.
I quote from "Thursday," and I could quote this entire moving poem, but who knows but there's a volume of Schuyler, selected or collected, it would behoove you to purchase. So yeah, where would we be without this scaling of so human a testimony?