General, I have been hunting for many years, and written books about hunting animals. I have never talked about hunting humans at all in those books.
Pathos
General, hunting humans is not humane. Imagine hunting your father. Imagine losing your father because of someone else's thirst for hunt.
Logos
General, Think about what would happen if people found out. Someday, some curious traveller will come here with more people than you can handle. Think about what would happen if people found out.
This dialogue represents Ethos because it appeals to the fact that Rainsford is a renowned hunting specialist who has written books on hunting and that the general looks up to him for his expertise.
This dialogue represents Pathos becuase it appeals to the emotions of the general. The fact that he talks about someone the general cares about makes the argument touch on his emotions more.
This dialogue represents Logos because Rainsford uses logic to convince the general of what could happen if he continued to follow his actions of hunting humans.