Complex sentence: In any case, the "Mouth of Iron" was published in Paris between October 1790 and 28 July 1791, at first, three times per week, then daily, beginning on 22 June 1791.
Split into simpler sentences: In any case, the "Mouth of Iron" was published in Paris between October 1790 and 28 July 1791. It was published three times per week, then daily, beginning on 22 June 1791.