VII. Acknowledgements

I would like to express my deepest gratitude to Mr. BERNARD SUPRIN, Nouméa, New Caledonia. This study would have been impossible without his assistance during the three journeys in New Caledonia.   Prof. Dr. STUETZEL and Mr. KNOPF, Ruhr-University, Bochum, I wish to thank for theoretical and practical support.
Additionally, I would like to express my gratitude to Dr. SEEHANN, Reinbek, for his patience and assistance regarding various questions and in the final stages of manuscript preparation.