The Bangerang tribe resided in two large bodies at the junction of the Glenelg and Murray rivers; the large group of the Narrinyeri on Lake Alexandrina; probably the coastal tribes in general were larger and more sedentary. This seems corroborated by the fact that they had usually larger and better-built huts (see below). The same factors would also tend to produce a more sedentary mode of living (the Bangerang, the Kurnai (partly at least), and possibly other coastal tribes). The view that density of population was directly dependent upon the nature of soil is strengthened by the direct statements of Wilhelmi, Turnbull, Moorhouse and Angas.[458] [458] The difference in physical geography between the coastal regions and the Central parts, the greater variety in the South-East region in general, and the relations of these physiographical features to the social features of the Australian aboriginal society, are well brought out by Prof. Frazer in his beautifully written chapter on Physical Geography (_Tot. and Exog._, chap. v. § 1, pp. 314-339). Prof. Frazer's conclusion that the coastal and South-Eastern tribes are more advanced involves the assertion set forth here that coastal tribes, and in general tribes living in more fertile regions, live in more numerous, stable and permanent aggregations. Many of the instances and quotations of Prof. Frazer's chapter directly confirm our results, and the reader is referred to this chapter, which reviews nearly all the geographical differences that can be traced in Australia. That I do not agree with Prof. Frazer's views as to group marriage, etc., and with all his conclusions referring to prehistoric times, hardly needs to be pointed out, and does not affect the importance for my argument of his splendid collection and exposition of facts. Especially the two passages from Grey, quoted by Prof. Frazer _in extenso_, which had escaped my attention, are very valuable. They show that on the coast, where the soil is more fertile, the natives lived in larger bodies. It may be mentioned that in places where, and times when, plenty of food was available, large numbers of natives gathered, but only temporarily, _e. g._ when a whale was stranded, or the Bunya-Bunya nuts were ripe, etc.[459] But as the major part of the continent is arid, we must suppose that the usual mode of living was in very small groups of one to three families; these groups being in exceptional cases regular local groups, in the majority of cases merely portions of them. [459] Tom Petrie, _Reminiscences_, chap. i. Besides, compare gatherings at initiation. R. H. Mathews, _Proc. R.S.N.S.W._, 1904, pp. 114-123. _Science of Man_, xi., 1910, p. 192. Bunya-Bunya gatherings.