202 REPORT ON AN ADDITIONAL COLLECTION OF SKELETAL 
occlusion among whites, according to data obtained by Hamy, Втоса, апа Topinard,! 
is sagittal, coronal below temporal ridges, lambdoid, coronal about bregma, and, 
finally, temporo-parietal. In all probability obliteration of the frontal suture com- 
mences earlier and advances more rapidly in the Indian than in the whites ; 
however, the precise differences in these respects between the two races remain to be 
determined by further observation. According to the writer's experience there 
exist many individual variations in regard to suture occlusion in the whites also. 
Sutural Bones.—\t we except a few specimens, sutural bones are scarce 
in both the Arkansas and the Louisiana crania. The same was observed in the 
series of Arkansas skulls described in 1908, and is evident in the collections of 
crania from Arkansas and Louisiana already in the National Museum from other 
sources. In three of the Arkansas and six of the Louisiana skulls of the present 
series no Wormian or other sutural bones at all are present. 
The sutural ossicles are not only few in number but they are generally small. 
They are found most frequently in the lambdoid, next in frequency being the tem- 
poro-occipital sutures and the squamo-mastoid angle. In two cases a sutural ossicle is 
present in the posterior extremity of the sagittal. In male skull 255.119, Arkansas, 
а small sutural bone exists between the two nasals; and in male skull 255.203, 
Louisiana, there is an epactal. In only two instances are there small epipterics. 
FACIAL FEATURES. 
Orbits. 
On the whole the orbits show nothing extraordinary. They differ quite 
widely in individuals, as shown in the measurements of height. There are no 
cases of very massive or of square orbits. 
Nasal Bones. Upper Мал е. 
The zaszom depression ав a rule is fairly well marked in the males and more 
or less shallow in the females, being in both quite comparable with that in whites. 
The nasal bones usually have fair breadth. An exception to this, accom- 
panied with an abnormality of the right bone, has been mentioned (page 176), and 
there are two other cases in which the breadth of the bones is sub-medium. 
The nasal bridge averages moderate height. There are no high noses, and in 
three of the skulls the bridge is rather low. —— 
The zz/ertor nasal border (that of the notches) is prevalently more or less dull, 
as seen from the following details :? 
ARKANSAS | | LOUISIANA 
E | | | 
Males | Females | Males | Females 
Border sharp as aver- 5 | 3 | 2 | 5 
age іп whites | | | 
| | | 
Somewhat dull 1 | 3 | 5 | 9 
Dull 5 | 3 | 7 | "а 
| | 
1 Торіпаға, P., Éléments d’Anthropologie Générale, Paris, 1885, p. 645. ; 
| * In 14 male and 7 female Arkansas skulls of the old National Museum collections, the condi- 
tion of the inferior nasal border is as follows: Border sharp, M. 7, F. 4; somewhat dull, M. 1, F. 9; 
dull, M. 5, F. 2; slight to moderate sub-nasal fossæ were present іп M. 6 and F. 0 
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