A constructive expedient to achieve a symmetrical stability is exemplified by the Mailu system of canoe-building, where a platform bridges two parallel, hollowed-out logs. Cf. Author’s article in the Transactions of the Royal Society of S. Australia, Vol. XXXIX, 1915, pp. 494–706. Chapter IV, 612–599. Plates XXXV–XXXVII.

The whole tribal life is based on a continuous material give and take; cf. the above mentioned article in the Economic Journal, March, 1921, and the digression on this subject in Chapter VI, Division IV–VII.

This view has been more fully elaborated in the article on “Primitive Economics” in the Economic Journal, March, 1921; compare also the remarks on systematic magic in Chapter XVII, Division VII.

The way of hiring a masawa (sea-going) canoe is different from the usual transaction, when hiring a fishing canoe. In the latter case, the payment consists of giving part of the yield of fish, and this is called uwaga. The same term applies to all payments for objects hired. Thus, if fishing nets or hunting implements, or a small canoe for trading along the coast are hired out, part of the proceeds are given as uwaga.