Complex sentence: Barring Rogers, after Crowley, the poem was not published in its entirety until Thomas Whitaker's 1813 edition which emerged at a time when amateur philologists began the groundwork of what would later become a recognized scholarly discipline.
Split into simpler sentences: Barring Rogers, after Crowley, the poem was not published in its entirety until Thomas Whitaker's 1813 edition. It emerged at a time when amateur philologists began the groundwork of what would later become a recognized scholarly discipline.