420 Variation and Correlation of the Human Skull 
TABLE I. 
Capacity of Thirty Skulls, diversely measured. 
No. 
Sex 
Mustard 
Rape 
Sand 
1 91 9 
J- 
0 
1 97*^ 
1 97fi 
1474 
0 
1 '^d'l 
± 0^0 
1483 
0 
LO i 0 
1 '<7Q 
1 ^79 
1586 
6 
1305 
LO kyJ 
1 "^nn 
1 oww 
15371 
i- 
0 
1445 
1440 
1435 
1651 
0 
1288 
1 9Q^ 
1666 
0 
¥ 
1300 
XOv/O 
1683 
0 
1245 
1743 
0 
¥ 
1327 
1 Oil! J 
Q. 408" 
0 
+ 
1305 
1302 
1300 
1890 
0 
1425 
1420 
1410 
() 83 
0 
1398 
1 '^Q7 
1 ov t 
i.Oi:/o 
1787 
J: 1 
0 ■ 
1557 
^ 114.5 
1525 ' * 
1804 
0 
¥ 
1274 
1 979 
1 970 
1814'' 
0 
¥ 
1215 
1220 
1220 
1825 
Q 
¥ 
1200 
1205 
1205 
1827 
1187 
1190 
1190 
1875 
s 
1285 
1288 
1285 
1878 
? 
1310 
1315 
1308 
Q. 466^ 
i- 
0 
1260 
1265 
1255 
B.5 
? 
1355 
1365 
1345 
B. 21 
? 
1225 
1225 
1218 
T. 19 
s 
1353 
1358 
1356 
T. 23 
1280 
1275 
1265 
T. 23'' 
s 
1253 
1260 
1250 
T. 23^ 
? 
1277 
1280 
1270 
T. 29'^ 
s 
1220 
1230 
1225 
15 
? 
1187 
1185 
1180 
121 
? 
1445 
1440 
1435 
724 
? 
1205 
1205 
1200 
Mean 
1304-1 
1304-8 
1299-0 
Now these results are in very fair agreement, if anything the estimate by 
sand is slightly less than those by seed. The remainder of the skulls were only 
done twice, once by mustard seed and once by rape seed, and this merely for 
verification. Clearly the same person using different material, sand and seed, and 
consequently rather different methods of packing can obtain results in good 
agreement among themselves. But if different persons repeat the process or use 
a different process will they reach sensibly the same values ? 
Now some of the Naqada skulls were measured independently by four different 
observers. Thus the capacity of No. 1308 as determined by Professor Thane (mean 
of two determinations) was 1201, Mr Quebell (mean of two) 1238, H. Thompson 
(mean of two) 1214, and by C. D. Fawcett (mean of three) 1217. Again, 5 24* 
was determined by Professor Thane at 1454, by H. Thompson at 1481 and by 
C. D. Fawcett at 1497. Further, i?21 was estimated by Professor Thane at 1156, 
* The skull broke under the last measurement, so that it is somewhat doubtful. 
