68 
Anthropometry of Modern Egyptians 
stature and chest measurement as the chief factors. The statistics here discussed 
show that, for natives of Alexandria at least, there is a positive correlation of 
0'112 + 0022 between stature and cephalic index (which might be expected to be 
independent of stature*) on 643 subjects f. If we may extend this result to the 
rest of Egypt proper, it follows of course that Professor Myers' series, although not 
primarily selected by cephalic index, are still so selected to the extent implied in 
the above coefficient of correlation. The evaluation of the correlations for other 
parts of the country will form the subject of a later investigation. A further 
selection was made by rejection of the Copts from his statistics!, and also by 
eliminating those subjects whose parents were natives of different mudirias 
(provinces), but this last procedure is probably not altogether objectionable, since 
it tends to assure homogeneity of the material. 
(6) The arrangement of the subjects of the present paper into classes 
according to place of origin has been made by birthplace without reference to the 
origin of the parents, on which no information is available, and it becomes 
necessary to consider to what extent migration may have affected the figures. 
The statistics resulting from the census of 1907 show that, while there is a 
large influx from the provinces into the towns, there is but little inter-migration 
between the provinces themselves. Thus out of a total native male population 
of 306,000 in Cairo, 105,000 (341 per thousand) were born outside the city, and 
of these 8,700 (28 - 6 per thousand) came from Girga, one of the most active centres 
of emigration ; but for Qaliubia, a province which lies just to the north of Cairo, 
the figures give 15,000 (75 per thousand) male immigrants out of a total native 
male population of 201,000, and of these only 760 (3*8 per thousand) came from 
Girga. Railway statistics for Egypt show that the number of third-class passengers 
has increased very considerably in recent years, from which we may reasonably 
conclude that migration also has increased, so that the figures given above may 
be considered as an upper limit. In the provinces therefore, migration is so small 
that its effects (except possibly when integrated through long intervals) may be 
neglected. Where the influence is appreciable, as in the towns, it will tend to 
produce a recession towards the general mean of the population. 
(7) Reduction of the Cephalic Index^ to the Cranial Index. The primary 
object of this paper was to give data for the comparison of the modern Egyptian 
* [Stature and cephalic index correlation = --08 ±'02 for Cambridge Undergraduates, = - - 13 for 
Oxford Undergraduates (see Biometrika, Vol. vni. p. 51), and the interracial correlation between stature 
and cephalic index was found by Tschepourkowsky from two different series to be - -18 and - "22 
respectively (Biometrika, Vol. iv. p. 288). It has usually been supposed that there is a small negative 
correlation between stature and cephalic index, due to the fact that the taller races are more dolicho- 
cephalic. Editor.] 
t Since this was written the coefficient of correlation for stature and cephalic index in Nubia has 
been found to be - 0-237 ±0-065. 
+ Since this was written the differences between Copts and Moslems in the present statistics have 
been found to be very small. 
§ Throughout this paper "cephalic index " will be employed to refer to the measures on the head 
over the flesh, and " cranial index " to refer to measures on the skull. 
