No. 393-] THE HUMAN FOETUS. 731 
in the baboons we have in the same positions upon the palm 
and sole strongly developed mounds with marked patterns of 
the epidermic ridges, and that in man there are upon the palms 
Fic, 2.— Cross-section of the left foot of the same creas. ance 193 . £ in pe of 
eea in Harvard Medical School. Rom s. Arabic 
s = number of mound. 
and soles “patterns” (Galton) or “centers of disturbance ” 
(Wilder) of the epidermic ridges at these points. Seldom, how- 
ever, do we find them all present upon one palm or sole. 
Fic. 3.— L ongitudinal 
the right foot of t feet Section 194 
H 20 in Harvard collection. 
Typically there is but one pattern upon the adult hand and 
two upon the adult foot. The accompanying table shows the 
relative frequency of occurrences of the several patterns in the 
adult 
NuMBER OF Num Ra- NuMBER OF tuues oF Fisvu- 
THENAR DIAL OR TIBIAL AN LAR OR ULNA 
PATTERNS. PATTERNS. PATTERNS, PATTERNS. 
200 hands. 17=85% | 13=65% | 129 = 64.5%) 62 = 32.5% 
41 feet. 39 = 95-1 % 9 = 21.9%| 32 = 78.1% 12.1 % 
It will be noticed that with the exception of the ulnar-fibular 
pattern the occurrence of any pattern is more frequent in the 
