No. 393.] i THE HUMAN FÆŒÆTUS. 72% 
CONCLUSIONS. 
I. There are upon the sole of the human foetus of two to 
three months four mounds situated interdigitally along the line 
of the metatarso-phalangeal joints. Three mounds exist in a 
similar situation upon the palm of the foetus of the same age. 
In the foot the mounds disappear. Upon the hand they per- 
sist as the less definite “mounts” of palmistry. 
II. These mounds are homologous with the walking pads of 
some mammals, and havea direct relation to the “centers of 
an 
Fic. 5.— Palm of a fœtus of Fic. 6.— Palm of Inuus (from Kollmann 
Evot gapperi. after Purkinje). 
disturbance ” of the epidermic ridges upon the palms and soles 
of man and other primates. 
III. Corresponding with a poorer development of these 
mounds upon the hand than on the foot in the foetus, the 
“centers of disturbance ” occur upon the foot more frequently 
than upon the hand in the adult. 
HARVARD UNIVERSITY, 
May 23, 1899. 
