264 
OX DATA rOIi THE PROBLEM OF EVOLUTIOX IX MAX. 
Actual Values couipared witli Values Predicted from Circumferential Measurements 
m t 
he case of 40 Theban Skulls. 
Male skulls. 
Female skulls. 
Xo. 
Actual 
Error by 
Error 1jy 
Error by 
Actual 
Error by 
Error by 
Error by 
value. 
(20)«. 
(21)«. 
(22)». 
value. 
(20)b 
(21)h - 
(22)h 
1 
1480 
- 2 
- 50 
- 10 
1280 
+ 1 
+ 37 
+ 20 
o 
1383 
+ 32 
-23 
+ 5 
1337 
-74 
-69 
-70 
3 
1563 
-42 
-203 
- 107 
1356 
-15 
-48 
-11 
4 
1380 
+ 70 
- 7 
+ 39 
1253 
+ 22 
-10 
+ 14 ; 
5 
1543 
-79 
- 8 
- 25 
1413 
-90 
-23 
-51 , 
6 
1390 
-32 
+ 28 
- 4 
1420 
-109 
-103 
-96 
7 
1310 
+ 21 
+ 74 
+ 38 
1227 
+ 24 
+ 65 
+ 39 
8 
1355 
-61 
- 18 
+ 7 
1120 
+ 23 
+ 66 
+ 19 
9 
1353 
-44 
-60 
-98 
1220 
+ 121 
+ 80 
+ 122 
10 
1407 
+ 29 
-35 
- 2 
1270 
-54 
+ 14 
-35 
11 
1250 
+ 143 
-77 
+ 20 
' 1333 
-142 
- 8 
- 102 
12 
1550 
-86 
-143 
-104 
1330 
- 133 
-62 
-116 
13 
1430 
- 12 
0 
- 6 
1260 
+ 93 
-17 
+ 70 
14 
1435 
_j_ 22 
- 17 
+ 14 
1390 
+ 22 
-147 
-12 
15 
1493 
-50 
-40 
O ( 
— oP 
1165 
o 
— O 
+ 94 
+ 17 
16 
1250 
+ 31 
+ 75 
+ 33 
1195 
— 3 
+ 24 
- 5 
17 
1290 
+ 69 
+ 23 
+ 36 
1093 
-31 
+ 60 
+ 24 
18 
1443 
-56 
-48 
-53 
1347 
- 6 
- 22 
+ 4 
19 
1170 
+ 19 
-67 
-70 
1245 
+ 24 
+ 31 
+ .30 
20 
1525 
+ 10 
- 130 
-40 
1250 
-76 
+ 83 
-29 
Mean 1 
error / 
•— 
45-5 
56-3 
37 • 25 
53-3 
Do * lu 
c. 
Finally for our third proljlem—tliat of reconstructing the capacity of the living 
head—there appears no obvious method of alloAving for the diiference between the 
circumferential measurements with and without the living tissues. Of course such 
measurements as those now' being made at Strasburg in the Anatomical Institute may 
surmount this difficulty and enable us to predict capacity from measurements on the 
living head. 
It would thus seem that, as far as the present investigations go, circumferential 
measurements do not present great advantages over those discussed in the body of 
this pa})er, although the C(jrrelations betw'eeii capacity and these measurements 
appear, as far as yet has been investigated, to have high values.'^ 
lliis is directly op2:)Osed to the view of Dr. Franz Bo.vs (‘American Anthropologist,' X.S., vol. I., 
p. 461). He holds that: “It would seem that circumferences are the most available means of judging 
cranial size.” He does not appear, howe^■er, to have correlated the circumferential measurements with 
capacity, and seen how widely the resulting ecpiations differ from race to race. 
