Contents: Sven and Lilli.-The lost prince.-The three mermaids.-Rake up!.-The kingdom of ocean.-Margrette.-Long John and the mermaid.-The magical tune.-The comb, the flute and the spinning wheel.-The magic lake.-The untidy mermaid.-The grouch of the Isle of Lok.-The geese and the golden chain.-Merman Rosmer.-The lake maiden.-The four abdallahs