The language, of which the preceding pages provide a general survey, is spoken over a vast region of the central part of New South Wales. Across an area 350 miles in width, starting at Albury on the Murray River, and heading 600 miles north, dialects of Wailwan can be found. Along this route are the hunting grounds of the Wiradyuri, Wongaibon, Wailwan, Kamilaroi, Yukumbil, Yualeai, Pikumbil and other tribes who speak dialects of this large language.

This whole article is the result of my own personal investigations among the native tribes, without the assistance from any other person. Only those familiar with the difficulties of collecting such data, amongst illiterate people, will realise the obstacles I had to overcome to establish the grammatical form of the language. Some errors and omissions are practically inevitable in the first publication of a work of this nature. That is why the I crave the indulgence of the reader for any faults in these pages.

The initiation ceremonies of the Wailwan, Wongaibon and Wiradyuri, known under the designation Burbung, were described in detail by me in other articles.^[2]

The initiation ceremonies among the Kamilaroi, Yukumbil and other tribes are called Bora, and have also been described by me elsewhere.^[3]

These tribes have a common social organisation with only slight modifications. Marriage is regulated by the division of the community into four sections called Murri, Kubbi, Ippai and Kumbo. I have described this in detail in other journals.^[4]