addis et causas, quibus hic liber nonus octo superiorum voluminibus accrescat: eo quod Gaius Secundus, cuius nos orbitas sequi hoc opere pronuntias, paribus titulis opus epistulare determinet.
You add some reasons why this ninth book should be annexed to the eight earlier ones, pointing out that Gaius Secundus, whose tracks you declare me to be following in this work, completes his collection of letters in the same number of parts.
final_alignments\Sidonius_Letters_Book9.json