Geometer

I love this poem ("A Measuring Worm," by Richard Wilbur), published in the current New Yorker (February 6 & 18). The form is five stanzas of three lines each, ABA. A little punctuation would have helped; we decided that the inchworm is green, with yellow stripes, and not the other way around, especially with the later description of "dark omegas," but maybe not. Henceforth, I'll always think of them as forming omegas. Windows that were much in my view at one time displayed an intertwined alpha and omega in stained glass.