How we cite our quotes: (Chapter.Paragraph)
Quote #7
"Heaven protect me from a prejudice so unworthy of my reason!" returned Duncan, at the same time conscious of such a feeling, and that as deeply rooted as if it had been ingrafted in his nature. (16.30)
Heyward acknowledges that his prejudice against blacks is not reasonable, but still feels it anyway. Heyward is basically the human equivalent of a dirty sock, and this is one of the reasons.
Quote #8
"Come," he said, laying his soiled hands on the dress of Cora, "the wigwam of the Huron is still open. Is it not better than this place?"
"Away!" cried Cora, veiling her eyes from his revolting aspect. (17.80-17.81)
Given that Cora is comfortable with Uncas and "marries" him later, what is problematic about marrying Magua? Clearly her prejudice is not racially based.
Quote #9
"Yes," said Hawkeye, dropping his rifle, and leaning on it with an air of visible contempt, "he will do their singing. Can he slay a buck for their dinner; journey by the moss on the beeches, or cut the throat of a Huron?" (18.48)
Hawkeye's prejudices are not just racially or tribally based. He also carries prejudices against book learning, which he sees as being next to useless (at least compared to survival skills).