Note IX-47 — Chapter IX · ANTIQUITIES OF THE CENTRAL PLATEAUX.
Reading edition
Dupaix, 2d exped., pp. 11-13, pl. xv.-vii., fig. 44-51; Kingsborough, vol. v., pp. 241-3, vol. vi., p. 441, vol. iv., pl. xiii.-xv., fig. 44-51; Lenoir, in Antiq. Mex., tom. ii., div. i., pp. 45-6; Baldwin's Anc. Amer., pp. 122-3—with a remark that 'telescopic tubes' have been found in Mississippi mounds and in Peru.