On the older blocks near Slade Street the silver maples and bur oaks lean out over the pavement, and the lawns beneath them live in shifting shade all summer. Gabriel's Landscape & Tree Services Inc. mows and maintains those Palatine yards, the shaded strips, the sunny front slopes, the narrow side runs where a mower barely fits. Late-August light comes in low and sideways through those trees, and a lawn cut that morning holds its pattern like corduroy until dusk. Edging along the old sidewalks, trimming where the mower can't reach, and clearing the yard when the leaves come down give the season its shape. It is ordinary upkeep on streets that reward the attention.