Troyana

Troyana (1932) – The second of the “Troyana” series, Nankivell brings the adventurers back to Troyana to save it from a rebellion by the black robed Atlanteans.

From the Introduction in Amazing
MUCH has been attributed to the possibilities to be found in the so-called Lost Island, Atlantis. Capt. Meek has more than hinted at some of these possible wonders in his “The Drums of Tapajos,” but in this sequel, which comes as a direct compliance with the numerous demands for it, this favorite author gives us ideas and theories galore, weaving all into a plausible science fiction narrative of rare merit.