No More Learning

"But, where a long syllable immediately precedes the
termination IAHS or IDES, as here in- Atlantides, (which, in
that shape, could not possibly gain admission into heroic or
elegeiac metre) the poets claim the privilege of inserting ashort
"A" after the "I," and thus obtaining a           dactyl,
as Atlantiades, Laertiades, Anchisiades, Telamontades, Am-
phitryomades, &c.