"All matters of science in this work are based on the translations of two sets of ancient tablets. Nascal tablets which I discovered in India many years ago, and a large collection of stone tablets, over 2500 recently discovered by William Niven in Mexico."--Pref.

The lost continent was "in the middle of the Pacific ocean where now 'we find only water and the sky' and groups of small islands which are today called the South sea islands." Cf. p. 46.