The thing this week's novels had in common was the confrontation of civilised and barbaric forms of human life, or at least what are called such in our culture. In 'The Bride Comes To Yellow Sky' by Stephen Crane, it happens directly and by completely devastating the idea of barbarism, while in 'The Law of Life' by Jack London, 'barbarism' is meant to be contrasted with the reader's own culture, and while it definitely degrades the former for some degree, it also leaves space for musing.
The town marshal and his newly married wife are representing the wilderness of Yellow Sky and the spreading civilness simultaneously – on the train and at home, respectively. The story actually concentrates on the way how sophistication (and thus civilisation) wins over barbarism. We may see it on the train already, but it’s the end of the story which is devastating for the latter: it demonstrates that no self-confindence is unbreachable if it’s hit at the right point, even by chance (and the only way to improve its probablity is being more sophisticated). It's also worth observing that any kind of behaviour connected with childish activities may look ridiculous in an instant to anyone when confronted with adult matters.
The second story about the former indian chieftain however, makes only a slight judgement about barbarism, referring to the narrow-mindedness of the old man’s ideology. The narration is intended to be neutral, and there are no things in the forest that would make a contrast. It could be seen as a comparison between the values of pagan religions and Christianity – obeying nature and living in harmony versus reaching for Heavens and incurring all the illnesses of a misused body and mind. The average reader however – and the century in which the story was read may not make a difference – is probably not impartial enough to make objective judgements on the story, and it’s also questionable if the writer was. It may be an effective tool to write a neutral narrative while letting the prejudice of the audience to do the rest.