I see a blank line, but I'm not sure if it's supposed to say "A devil's the same"....
The Calibre viewer should be fine for reading, and if there is indeed text missing it would help to see the html code for those lines of the book. That said, if you want to see how this would look on your reader, you're better off using Adobe Digital Editions, which is what the software on your Reader is probably based off of. Calibre's viewer (and Sigil's) use QT, which provides good general html rendering capabilities, but QT has a different set of Quirks (and more html rendering features) than most ebook readers, so I wouldn't trust it to show me exactly how things will look on my reader.
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