916 REPORT ON AN ADDITIONAL COLLECTION OF SKELETAL 
flattening, which is more pronounced in Indians than in whites, two measurements 
were taken, namely, the greatest lateral and the smallest antero-posterior diameter. 
The percental relation of these dimensions gives the index of the flattening. This 
index, it is seen, is lower in the females than in the males, showing that the female 
femur is the flatter at this point. As to the two sides, it differs but little. In 
the two areas under consideration, the index of flattening is perceptibly higher in the 
femora of the Arkansas males than in those of Louisiana. The female groups show an 
opposite condition, but this may be due to the small number of specimens obtained. 
FEMUR—LENGTH : MEASUREMENTS AND INDEX OF SUBTROCHANTERIC FLATTENING 
| Nam: Average Num- | Average mini- | Num. | Average mini- | Num- Index of 
ber of bicond n. ber of | mum breadth | her of mum thickness| per of laty ni 
ye li Side 5 = len = speci- | at subtrochan- | speci- | at subtrochan- | speci. Ра ода 
and Locality - 8 Ce teric flattening ша teric flattening ае (СЪ 
(а) | (5) a 
Males | ст. ст. ст. 
ж. 45.6 3.2 2.5 Ў 76.7 
Right 14 "Wade t ЕЕ. IT VT. 15 
po E | (42.0-48.8) (2.75-3.65) | (2.15-2.75) (70.4-84.6) 
Boytt's Field | #5 6 r> тын PS 2.5 К 76.6 
Left | 14 | (42 148.7)| 9 | (2835) | ° | (2.2-2.75) | 15 | (721-8048) 
АЯ 44.1 3.3 74.2 
Right 19 | (39.9-48.3)| 23 | (3.03.6) | 23 | (2027) | 23 | (656-867) 
Louisiana x p 
44.2 3.3 24 ; 
Left | 19 | (39.8-48.4) | 28 | (29/36) | 29 | (2027) | 23 | (64.7-83.3) 
deeem қ 4 | о à Ue 2.2 А 69.5 
а Right (38.9-42.4) (3.15-3.35) (1.75-2.45) (54.7-75,4) 
Boytt's Field 
41.2 3.2 2.2 70.2 
Left | 4 | (39.2-42.8)| 6 | (3.05-3.3) | ^ | (1.70-2.45)| 9 | (53.1-78.7) 
: 41.25 3.05 2.2 72.9 
Right| 12 | (385431) | 13 ! (2882) | 19 ! (20524) | 1? | (621-811) 
Louisiana | 
41.3 bis 2:2 72.2 
Left | 12 | (38.4-43.3) | 13 | (2.85-3.3) | 18 | (2.0-2.35) | 13 | (63.5-81.0) 
The relation between the length of the humerus and the length of the femur, 
or humero-femoral index, approaches 72 in this series, or nearly the same as is 
observed in whites. 
The shaft is massive and generally well developed. | 
The linea aspera, as will be seen by the following notes, is in numerous cases — 
exceptionally high, giving the so-called pilasteric character to the shaft; but this - 
feature is plainly a compensatory one, for a more than ordinarily greater backward 
bending of the shaft, about or above its middle, is present in these bones. | 
The shape of the shaft predominantly approaches the prismatic, but pure types 
of this form are rare. Next in frequency is the elliptical shape, followed by the 
plano-convex. It is interesting to note that the plano-convex shaft is found only 
in the males. A somewhat similar condition prevails in the case of the round | 
shaft, while, on the other hand, the elliptical form is much more frequent in the 
female femora. | — 
