
















508 FRETS, THE INDEX CEPHALICUS. 
Table 12. (Continued). 
N. of HEAD. SKULL. | DIFFERENCE. 
ae RUES CT BRIE? B. | Ind. | Le | Be NER 
17.12: 17-18 14.3 79.4 17.7.0139 78.5 | 0.3 0.4 0.9 
47.13210518.5 | 15.8 85.3 17.7 | 14.95 | 84.5 | 0.8 0.85 0.8 
17.14 | 19.1 15 79 18.5 | 14.65 | 79.2 0.6 0.45 | — 0.2 
17151192 15 78.1 18.8 | 14.65 | 77.9 0.4 0.35 0.2 
17.16 | 18 13.8 76.7: |) 17:8. 13.4 75.3 0.2 0.4 1.4 
17.17 18.6 14.75 179,372], 18.2 14.3 78.6 0.4 0.45 0.7 
17.181 18.151 14:85 | 81.8 18 - 14.45 | 80.3 0.15 0.4 1-5 
17.198019 122 89.2 19.1 | 16.7 87.3 0.2 0.5 1.9 
17.20 | 19.5 15.4 79.2 19.3 | 14.9 77.2 0.2 0.5 2 
EARL AIO ET, 14.3 76.6 18.3 | 14 76.6 0.4 0.3 0 
17.22 | 18.9 14.7 AAA 18-2 i TEA 77.5 0.7 0.6 0.2 
17:23 e953 15.3 79.3 19 15 78.9 0.3 0.3 0.4 
17.24 | 20.4 15.7 76.9 19.9 | 14.9 74.9 0.5 0.8 2 
17225200182 14.5 79.7 17.8 | 14 78.6 || 0.4 0.5 1.1 
17204817 14.2 83.5 16.6 | 13.8 83.1 ||, 0.4 0.4 0.4 
1727154156 13.3 73.6 17.6 | 13.1 74.5 | 0.4 0.2 | —0.9 
17.28 |" 18.6 1325 12:5 18.20.0131 122 0.4 0.4 0.3 
17.29 | 18.4 15.4 83.4 || 18 14.7 81.7 0.4 0.7 1.7 
17.30 '. 19.5 10. 80.5 | 19 15.1 79.2 0.5 0.6 1.3 
17.31 18.7 15.1 80.7 || 17.8 14.1 79.92 || 0.9 ab; ES 
17.32 | 20.8 15.1 72.6 || 20.3 | 14.6 71.9 0.5 0.5 0.7 
17.3301018:0 14.8 79.6 || 17.7 | 14 79.1 0.9 0.8 0.5 
57 Cases Difference 44.4 
Mean difference of head-and Skullindex 
Standard deviation © 
0.78 
= 0.695 

