human
A sacrificial altar of some ancient tribe,
gpt
I'm not so sure, replied Frank as the _Golden Eagle II_ heeling over, circled slowly about the object of their mystification.
human
What do you know about this, Quatty?
gpt
Quatty thinks him used by Injuns to make smoke signals, said the old negro scanning the altar narrowly.
human
When an Injun he wants to signal he builds a fire on dere and den makes de smoke rise or fade away by covering it wid a green branch,
gpt
That is undoubtedly the correct explanation, said Frank,