"We're working well," he said.  He put down his spade. "Let us
knock off a bit" he said.  "I think it's time we reconnoitred from the
roof of the house."

I was for going on, and after a little hesitation he resumed his
spade; and then suddenly I was struck by a thought.  I stopped, and so
did he at once.

"Why were you walking about the common," I said, "instead of being
here?"

"Taking the air," he said.  "I was coming back.  It's safer by
night."

"But the work?"