LIST OF THE ORGANS AND TOPICS CONSIDERED 
IN THE TEXT, CLASSED ACCORDING TO THE 
SYSTEMS TO WHICH THEY RELATE 
I. INTEGUMENT AND INTEGUMENTAL ORGANS 
(a) Horny Structures. 
Vibrissze (tactile hairs). 
Primitive hairy covering (lanugo). 
Converging hair vortices, ex. vertex 
coccygeus. 
Glabella and foveola coccygea. 
Pseudohypertrichosis. 
Hypertrichosis vera. 
Nails (the fifth claw-like). 
(b) Glands, 
Montgomery’s glands. 
Mammary pouches. 
Mammary line. 
Supernumerary mammary glands — 
and nipples (polymasty, polythely). 
Pectoral hair vortices (probably indi- 
cating the former position of super- 
numerary nipples). 
II. SKELETAL SYSTEM 
(a) Vertebral Column. 
Cauda humana. 
Os coccygis. 
Curvature of the lumbar portion of 
the spinal column. 
Forward shifting of the sacral portion 
of the spinal column (assimilation 
of the last lumbar vertebra). 
Numerical increase of the lumbar 
vertebree. 
Outgrowth of the transverse process 
of the sixth cervical vertebra. 
(b) Thorac. 
Quadrupedal form of the thorax in 
the child, with greater dorso-sternal 
diameter. 
Disappearance of the lumbar ribs. 
Disappearance of the cervical ribs. 
Reappearance of cervical, lumbar, and 
sacral ribs formerly present. 
Variations in development of the 
upper and lower ribs. 
Former greater extension of the 
pleuroperitoneal cavity, both an- 
teriorly and posteriorly. - 
The eighth sternal rib. 
Reduction of the sternal ribs to six. 
Reduction of the sternum. 
Vestiges of the episternal apparatus. 
(c) Skull. 
Post-frontal bone. 
Os interparietale. 
Os preinterparietale. 
Processus paramastoideus. 
Torus occipitalis. 
Suppression of the parietal process of 
the alisphenoid. 
