On a different note, I actually felt some sympathy for Trina in the movie, but none whatsoever in the novel. McTeague's biting and beating her didn't affect me while reading, but in the film when she showed McTeague her hand, I felt sorry for her. To be honest, this struck me as the part of the movie with the most humanity. The fact that Trina didn't let her husband in because of his past actions, and then him threatening her again, seemed like something that could happen.
The tinting of the gold and canaries was a weird effect. I understand that the gold was important to all of the characters in the novel, and the canary important to McTeague, but the act of coloring these things, while the rest of the movie is black and white seems to be a little over-the-top to me. The novel appeared to be focused mainly on people's responses to situations, and what happens when they're pushed too far. The emphasis on the gold and canaries in the movie seems to make the story about those things, rather than the people involved.
The whole thing just seemed strangely done to me, but I'm no expert in 1920's films. They went by a different set of rules, and had to exaggerate for effect, whereas today a few words would do the same. All the things I've criticized about the movie probably are the things that made it understandable to people who may have not read Norris's book. So I'll just leave it at that.