56 BUREAU OF AMERICAN ETHNOLOGY ' [BULL 62 
Supracondyloid process.—This process, which in a more or less rudi- 
mentary form, and especially in the form of a ridge, is not rare in 
whites, is very uncommon in the Indians, though even in this race 
in the majority of humeri some roughness, or even a slight ridge, 
can be detected in its position. Among the Munsee humeri no 
specimen shows more than a trace of the anomaly. 
The rarity of this process in the Indian is of additional interest 
from the fact that it seems to be shared by other branches of the 
yellow-brown race, and also by the blacks; moreover, the process 
appears to be absent, or nearly so, in the humeri of all known apes. 
The problem as to why a feature of this nature, which appears 
clearly to be reversive, should be more common in modern whites 
than in the more primitive races and even in the anthropoid apes 
and the lower primates, offers a fruitful field for investigation. 
RapDIus 
The total number of radii in condition to be measured is 41, 19 
male and 22 female. Taking the paired bones in the males, we find 
that their length is equal on the two sides, as was very nearly the 
case with the humeri; in the females the right radius averages 
slightly longer than the left, again as in the arm bones of this sex. 
The arms as a whole were therefore of very nearly the same length on 
the two sides in the males, but the right was generally slightly longer 
than the left in the females, a condition which in all probability was 
connected with the relatively greater use of the right hand and arm 
in the latter sex. 
The percental relation between the length of the radius and that of 
the humerus approximates 79 on both sides in the males and 78 in the 
females. Indians of other localities show much the same condition, 
the index approximating in the males 78 on both sides and in the 
females 77 on both sides. In whites the same index is only 73.6 in 
the males and 72.8 in the females; while the American negro gave to 
the writer 77.4 for the male and 76.8 for the female sex. This means 
that the forearm in the Munsee and in Indians generally is relatively 
long; it is decidedly longer in relation to the humerus than in the 
whites, and so far as the Munsee are concerned it is even slightly 
longer than in the average American negro; and in all the groups it 
is to a slight extent relatively longer in the males than in the females. 
In strength, curvature, and other features the Munsee radii show 
nothing exceptional. In fact, this bone is of secondary importance 
in the anthropology of modern races except in its relative proportions. 
