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FRETS, THE INDEX CEPHALICUS. 507 
Table 12. Head- and Skullindex. 
N. of ; HEAD. SKULL. DIFFERENCE. 
pee ae, B. | Ind. Da NEN a tr RE TR 
18.8 | 18.85 |15.2a.15 | 80.5 18.45 14.8 | 80.2 0.4 0.4 0.3 
18.10 | 17.95 14.5 | 80.8 17.6 |14.1a.15| 80.25}, 0.35 | 0.4a0.35) 0.55 
18.11 | 18.6 15.65 [84.14 | 18.4 15.25 |82.88|| 0.2 0.4 1.26 
28.12.0021 2 15.9 [75.2 20.8 15.35 |73.8 0.4 0.55 | 1.4 
18.13) 18.6 15.3 | 82.4 18.3 1485 18115111 03 0.45 | 1.25 
18.14} 19.65 15.5 |78.9 19.1 15.05 | 78.9 0.55 0.45 | 0 
18.15] 18.5 15.2: 18216 |118.1a:15| 14.8 |81.63//0.4a.35 | 0.4 0.53 
18.16| 18.2 14.7a.75 80.9 18.05 14.35 |79.5 0.15 |0.4a.35| 1.4 
18.17 | 18.7 15.25 |81.55|| 18.3 14.8 |80.87|| 0.4 0.55 | 0.68 
18.18 | 18.8 14:55 | 77.4 18.3 14 a. 05 | 76.6 0.5 0.5a.55\ 0.8 
1820 00197 14.95 | 80 18.35 14.8 | 80.6 0.35 0.15 | 0.6 
18.211719 15/3406) 80.5 18.65 15 | 80.4 0.35 0.3 0.1 
132234) 617.2 14.29 82°56 1.417 13.75 | 80.9 0.2 0.45 | 1.66 
18.24 | 18.2 14.9 81.85 || 18 14.5 | 80.55 0.2 0.4 1.3 
18.25 | 19.7 15.35 (| 78 19.2 14.95 | 77.86 0.5 0.4 0.14 
18.26. 17,55 13.9 79.2 17.3 13.6 | 78.6 0.25 0.3 0.6 
18.27) 19.1 14.28.25 | 74.5 18.8 13.9 | 73.9 0.3 0.3.a.35| 0.6 
18.28 | 19.55 15 76.7 19.05 14.4 :75.06|| 0.5 0.6 1.64 
18.29 | 19.6a.65| 14.7 | 74.9 19.2 14.4. | 75 0.49945 10603 MED 
18.30 | 19.5 15.9 |81.4 19.2 15.35. | 80 0.3 DST 
18.32| 19.4 1473 0073 fe aL 9.15 13.9. 0072.5 0:25 0.4 12 
18.33 | 19.4 1510778 19 VAT ae 77 4 0.4 0.4 | 04 
18.38) 1945 | 1405 | 72.2 || 18.8 135 | 71.8 | 0.65 0:55) 1): 0.4 
18.40| 19.6 Var 1.5 18.95 | 144 | 76 0.65 | 408° el, 
17.1 18.3 15:1... | 82.5 18.05 14.7 | 81.4 0.25 0.4 1.1 
17.2 18.3 15 82 18 14.75 |81.7 0.3 0.25 | 0.3 
17.3 18.1 15.3 | 84.5 17.8 1505 | 84.5 0.3 0.25.70 
17.4 | 15.7 ed 15.3 Mir 755 0.4 ee le, 
17.5 17.3 13.9 | 80.5 17.1 13.5 | 78.9 0.2 0.4 1.6 
17.6 18 14.25 | 79.2 17.75 14 78.6 0 25 0.25 | 0.6 
BIAS 17.85 14 78.4 17.4 1360702 0.45 0.4 | 0.2 
17.8 18.5 15.1 81.6 || 17.8 14.55 181.7 0.7 0:55 |) 2011 
17.9 19.9 16.3 | 81.8 19.3 15.65 | 81.2 0.6 0.65 | 0.6 
17.10 | 19.1 15 1001822 18.7 15:22 #813 0.4 0,50, 0.0.9 
17.11 |. 18.2 15.15 | 83.3 rey 144 |-81.3 0.5 0,752 
