A hot Sunday on the South Side, sun straight overhead, and the small square yards from Bartonville back into town each wait their turn. JARAMILLO'S LAWN MOWING takes them one at a time: mow, trim the fence line and the alley strip, edge the walk, sweep the concrete before moving up the block. Nothing about it is hurried — the mower goes back and forth until the whole yard lies even, and then that yard is done. Peoria summers ask a great deal of anyone working outside in the middle of the day. The reward is a street of neat green squares by evening, every one of them cut the same careful way.