Physical Characteristics of the Copper Eskimos 



JAW BREADTH— CORONATION GULF— Concluded 



b63 



The three Mackenzie delta men gave a mean of 116 mm., and the three 

 men from Point Hope 111-6. 



GONIO-ZYGOMATIC INDEX— CORONATION GULF 



Index 



Men 



Women 



67. 

 68. 

 69. 

 70. 

 71. 

 72. 

 73. 

 74. 

 75. 

 76. 

 77. 

 78. 

 79. 

 80. 

 81. 

 82. 

 83. 

 84. 

 85. 

 86. 

 87. 

 88. 



7 



2 



3 



6 



10 



6 



6 



11 



11 



5 



3 



4 



2 



1 



2 

 3 



1 

 3 

 5 

 2 

 6 

 10 

 2 



Number of cases 



Mean 



Standard deviation 



Probable error of mean 



Probable error of standard deviation. 

 Coefficient of variation 



82 



79-4 



+ 4-0 



+ 0-29 



±0-21 



50 



42 



80-1 



±3-9 



+0-40 



+ 0-28 



4-8 



For both sexes combined the mean index works out at 79 • 7, which is slightly 

 lower than the East Greenland index of 82-3 calculated by Hansen. Whether 

 this difference is due to the greater breadth of the jaw in East Greenland, or 

 the lesser breadth between the zygomatic arches, is uncertain, as the separate 

 figures for these two measurements are not given. Hansen states that the East 

 Greenland natives give a larger index than any other people yet examined. 

 The three Mackenzie delta men I measured had a mean gonio-zygomatic index 

 of 80, and the three Point Hope men of 78-5. , , . . , ., 



It would be interesting to note the variations of this index among other 

 Eskimo tribes, but unfortunately the data for this purpose are not available. 



