L. 19. _distraits_, diverted from their uneasy, anxious thoughts.

Ll. 21-28. Imitated from Horace, _Od._ III. iv.

Ll. 23. _Catile._ Catilus and Tibur are one and the same place, now

Tivoli (l. 26): _Moenia Catile_ in Horace.