★★★★ It was still cool in the morning, though with an undercurrent of dread at where the humidity might be taking things. At the far end of the West Fourth basketball court, a lone figure shot free throws. The oncoming sun, clearing the buildings, found haze on the air and greenish dust on the parked cars. A pale scrap of a butterfly, with black-tipped wings, bobbed out over the sidewalk and into a fenced-off bed of weeds. Cornering out of the shade of Broadway into Houston was like stepping into a sluggish river and beginning to wade upstream. But the struggle passed. Midday approached and the sky showed brown around the edges, but it was still comfortable up on the roof. Down on the streets at lunchtime, the shade continued to offer refuge. The Ukrainian church and the firehouse beside it had their doors open, offering a glimpse of the showpieces in their high dim interiors. Elderly shoppers paused to marvel at a white Mustang with red-and-white seats, parked with its top down. On through the afternoon, whenever the heat threatened, clouds kept intervening.