Where the Naugatuck slides into the Housatonic, Derby folds its hills down to the water, and the yards above Main Street lean toward the river light. Ideal Engine & Mower Service works that ground — mowing, trimming and edging, cleanups in spring and again in fall on the terraces climbing toward Osbornedale. There is a plain pleasure in a first cut of June: the grass laid down in even bands, the border along a walk cut clean as a page edge. Finish a street and the whole block reads brighter from the Greenway below. Ordinary work, done attentively, in a small city that has always known how to make things.