The scientists performed several experiments.

to sweep the bottom of a river with a net

We went at a foot-pace, but on the way back we trotted, and there was something to my mind singularly horrible in the way the driver of the hearse whipped up his horses.

The S&P 500, as of Wednesday, is now in the longest-running bull market ever, as some strategists measure it. That would be one day older than the 1990-to-2000 bull run, which ended with the bursting of the tech bubble in 2000.