886 



DAKCY WENTWORTH THOMPSON ON 



7 2 3 * -*" 



17. S <t ■*' 6 f 8 J 



Fig. 50. — The co-ordinate systems of figs. 48 and 49, with three intermediate systems interpolated. 



3 — 4 i- 6 r * 1 



Fig 51. — The first intermediate co-ordinate network, with its corresponding inscribed pelvis. 



