[531] Pooling is discussed in detail in volume II.

[532] University of Colorado Studies, V, 1908, pp. 137-148.

[533] Bulletin, University of Texas, No. 119, 1909, p. 73.

[534] Details in chapter I and in the discussion of speculation in volume II.

[535] Hudson, op. cit., pp. 251-286, uses much of this testimony.

[536] Pp. [72] et seq.

[537] Pp. [51] et seq.

[538] Pages [22], [422], supra, and [456], infra.

[539] Cf. Hudson, op. cit., pp. 41-46.

[540] Cf. chap. VIII.