[7] The jigger is the technical word for the wheel on which shapes are moulded with the aid of a jolly or profile; but it can be used for other purposes. The difference between an ordinary wheel and a jigger is that in the former the speed is changeable, in the latter fixed.
[8] Cf. e.g. Walters, Ancient Pottery, vol. I, p. 208; Herford, Greek Vase Painting, p. 9; etc., etc.
[9] Cf. Jay Hambidge, Dynamic Symmetry, the Greek Vase, and L. D. Caskey, Geometry of Greek Vases.
[10] Cf. e.g. in the Metropolitan Museum Nos. 08.258.21 and 12.236, where the joint is visible underneath the clay ridge.
[11] Cf. also especially Metropolitan Museum Nos. G. R. 534, 09.221.47, 09.221.48, 06.1021.168, G. R. 581, 18.145.28, etc.
[12] Cf. Buschor, Münchner Jahrbuch der bildenden Kunst, 1919, I/II, pp. 1 ff.
[13] Cf. American Journal of Archaeology, XII, second series, 1908, p. 421.
[14] “Twice fired” technically means, as already explained ([p. 35]), once for biscuit, another time for glaze; the glazing itself may have necessitated several firings, but the piece would still be spoken of as twice fired.
[15] Cf. e.g. Walters, op. cit., pp. 221, 222, and Herford, op. cit., pp. 13, 14. Reichhold, op. cit., p. 152, felt convinced there was only one firing.
[16] Occasionally a toothed instrument seems to have been used; as on the pyxis, No. 06.1117, in the Metropolitan Museum.