Abstract:
Of some of the details in the first part and most in the second part I have been informed through conversations with or letters from the people concerned or other authorities on the matter. I have not mentioned in detail my sources in these cases as they are too numerous; only where some printed document witnesses the fact have I stated the reference. I have to thank many people concerned in guidance in New Zealand for the time they have spent in answering my letters or questions and in obtaining information for me.