human
They have gone straight ahead, he said.
gpt
I went over the brow, and down the next hollow, and found their trail strong there, for the ground is swampy; they had certainly passed within an hour of the time I got there.
human
How did you know that?
gpt
Because the water was still muddy where they had passed; it would have settled again in an hour after being disturbed, so they could not have been more than that time ahead. They were keeping just parallel with the line of march of the caravan.
human
How many of them do you think there were?
gpt
Between fifty and sixty,
human
Perhaps they were merely journeying quietly along,
gpt
Not likely, Dick replied;