Context:

The speaker discusses a book by writer Peter Matthiessen (spelled 'Matheson' in transcript) about muskox. He describes it as 'sort of like a magazine article that turned into a book' and mentions that Matthiessen discusses how some natives call muskox 'oomingmak' and relates imagery about the muskox's wool swaying like chain mail and how the wool meets tall grass in a way that makes it hard to distinguish where one ends and one begins. The specific book title is not mentioned in the transcript.