1897.] Anthropology. 743 
twelve instances the right exceeds the right in some dimension,—a dif- 
ference hardly so great as one might expect; and it is possible that a 
larger series of observations would quite overcome whatever difference 
seems to exist. 
c. Sexual Variation.—Taking the scapulæ of the right side only and 
of the two races together we have the following results, which I have 
thrown into a Table: 
TABLE IV. 
Length. Breadth. |Infraspinous Length. 
Male. | Female. | Male. | Female. | Male. | Female. 
mm. mm. mm. mm. mm. mm. 
Average, 165 141 105 94 125 111 
It will thus be seen that the difference in the two sexes is a decided 
one, and a careful examination of the preceding table shows very few 
exceptions where the largest female scapula equals in size the smallest 
of the males. 
d. Ethnie Variation.—Although the two series are hardly large 
enough to make it worth while to attempt to draw any conclusions, it 
would appear that the scapula in the Songish is very slightly larger 
than it is in the Kwakiutl. This difference is more pronounced in the 
males than it is in the females. 
IV. INDICES. 
In Table V the range of variation may be seen for each index, in 
each sex, and for both races. 
The highest scapular index is 70, found in a Songish female; the 
lowest is 59, in a Songish male. The highest infraspinous index is 90, 
occurring both in a Songish female and a Kwakiutl male ; the lowest is 
76, in a Kwakiutl female. Apart from the extremes this table shows 
two very interesting points; the first is that there is very little sexual 
variation ; the second is that while the scapular index is fairly uniform, 
the infraspinous index is subject to great variation. The averages of 
each index for both races are shown in Table VI, 
The scapular index of 65.1 for the mean of both races may be re- 
garded, it seems to me, as a trustworthy index for the Northwest Coast 
Indians. This index, it may be noted, corresponds very closely to that 
