The Crushing Rock - The Return of Chandu

The Crushing Rock - The Return of Chandu, chapter 10
"FOREWORD: On the mysterious island of Lemuria, the Princess Nadji is awaiting the hour of her sacrifice by the Sorcerer priests of Ubasti. Aided by the White Priest, Tyba, Frank Chandler - known as Chandu, the Magician-is striving to rescue her; but members of Chandler's family have fallen into the hands of the Ubasti."
"The stone falls! If Chandu dies, will Tyba and Bob save Nadji from the sacrifice -- Or will the Black Magicians triumph?"