The book is available at Sacred Texts and at Hathi Trust (I have not checked for other online sources).
Table of Contents
The Little Girl and the Goblin
A Poor Young Woman and the Aranran Bird
Why the Ajao Bat Remained Unburied
The King and the Kini-Kini Bird
Sigo and the Tortoise
Tortoise and the King's Mute Daughter
The Tortoise and the Elephant
The Woman Named Adun and Tortoise
Tortoise and the Slender Maiden
Tortoise and Lizard