18 Cephalic Mmmremeiits in Efiyptian Born Natives 
TABLE I. Means and Standard Deviations fo)- the Cephalic Measareuients. 
Length of the Head 
Breadth of the Head 
Group 
iv 
0- ± Ea- 
A ± E_., 
a±Ea- 
Alexandria GDvernurate 
643 
189-77 + 0-16 
5-95 + 0-11 
144-64 + 0-13 
4-97 + 0-09 
( 'airo 
802 
190-52 + 0-14 
5-90 + 0-10 
144-45 + 0-11 
4-67+0-08 
t'anal 
127 
190-56 + 0-34 
5-78 + 0-24 
145-13 + 0-34 
5-66 + 0-24 
Beheira Province . 
526 
191-17±0-17 
5-81 ±0-12 
143-69 + 0-14 
4-73±0-l() 
Uliarbiya 
1104 
190 90 + 0 12 
5 93 +0 09 
143m3 + 0 10 
4-79 + 0-07 
Minufiya 
717 
191-06 + 0-15 
6-00 + 0-11 
143-59 + 0-12 
4-60 + 0-08 
Daqalillya 
504 
190-39 + 0-20 
6 67 + 0-14 
143-96 + 0-15 
4-83 + 0-10 
Sharqtya 
11 
0 Li) 
190-75 + 0-18 
6-16 + 0-13 
143-65 + 0-14 
4-82 + 0-10 
Qalyublya 
Ulza 
295 
190-82 + 0-23 
5-87 + 0-16 
143 69 + 0-19 
4-78 + 0-13 
11 
326 
191-79 + 0-22 
5 -78 ±0-15 
143-17+0-17 
4-60 + 0-12 
Fatyfim 
413 
191-20 + 0-20 
5-86 + 0-14 
141-84 + 0-16 
4-82+0-11 
Beni Sueif 
11 
384 
191-74 + 0-19 
5-65 ±0-14 
142-68 + 0-17 
4-90 + 0-12 
Minya 
491 
191-72+017 
5 65±0-12 
142-61+0-14 
4-56 + 0-10 
Asyat 
887 
190-91+0-13 
5-85 ±0-09 
142-52 + 0-10 
4-46 + 0-07 
Girga 
610 
191-49 + 0-16 
6-05 + 0-12 
142-30 + 0-12 
4-41 ±0-08 
Qina 
11 
824 
191-23 + 0-14 
5-99+0-10 
142-30 + 0-11 
4-77 ±0-08 
Aswan 
15 
262 
190-50 + 0-25 
5-97 + 018 
144-26 + 0-22 
5-23±0-15 
It might be rferaarked that the means and the standard deviations given here 
are not exactly the same as those given by Mr J. I. Craig*. In both cases the 
mathematics have been carefidly checked and found correct. The difference may 
be accounted for in the difference in the unit of the grouping method. In the 
former a standard unit of 3 millimetres was adopted giving at least a dozen 
sub-groups, whereas in the latter case the unit of grouping was invariably 2 or 
3 millimetres giving about 20 sub-groups. 
The difference however is insignificant (on the average three hundredths of 
a millimetre) and in no case does it i-each the corresponding probable error. 
5. Tlie Coefficients of Con-elation. The following coefficients of correlations 
have been computed and are given in order of magnitude : 
Beni vSueif Province . 
r = 
+ 0-208 ± 0-033 
Daqahliya 
+ 0-212 ± 0-029 
Beheira 
+ 0-213 + 0-028 
Minya 
+ 0-227 ± 0-029 
Girga 
+ 0-228 + 0-026 
Minufiya 
+ 0-230 ± 0-024 
Alexandria Governorate 
+ 0-244 + 0025 
Cairo „ 
-1- 0-244 + 0 025 
Shar(jiya Province 
-j- 0-248 ± 0-028 
Aswcxn 
+ 0-2(jO + 0039 
Giza „ 
+ 0-277 ± 0-034 
Qina 
+ 0-286 ± 0-022 
Qalyubiya „ 
+ 0-303 ± 0 026 
* Biomctrikii, Vol. vui. Nos. 1 and 2, July 1911. 
