1.	Die afrikanischen Bögen, &c., von Friedrich Ratzel. Leipzig, 1891
2.	Die afrikanischen Bögen, von Friedrich Ratzel. Hirzel, Leipzig.
3.	For the archery of the Andamanese, see Chapter VI.
4.	Structure and Affinities of the Composite Bow,' Journ. Anth. Inst. vol. xix.
5.	The back is the side of the bow distant from and the belly is the side of the bow nearest to the archer in the act of shooting.
6.	Journ. Anth. Inst. Vol. xix, pp 246 et seq.
7.	Report of the Smithsonian Institution, Part II.