It was the second time..
I saw that same hound running deer in that same area.
The first time I saw him was about a week earlier. He flushed out 3 deer that first time. It was the first time I had hunted that area, and I was just still hunting, with no tree stand with me.
The hound had a bright red collar on, with some kind of electronic device on it. I could see the short antenna clearly. I thought maybe the owner was nearby, but never saw anyone. I hunted, on that first day, for another 5 or 6 hours, covering another 3/4 mile beyond the hound encounter, and never saw a person. I did see a single deer, twice, that day. Never saw the hound a second time that first day.
Maybe I ought to inform the local game warden?