164 
EMBRYO 
me pues 
ES | » 
ee) i= 
a 4 
mm 
1121 | 11.8 
940 | 14.0 
H173 | 19.1 
460 | 20.0 
H91 | 27.8 
H41 | 32.1 
H163 | 39.1 
886 | 43.0 | Same 
True olfactory bulb 
Same + differentia- 
MARION HINES 
TUBERCULUM 
OLFACTORIUM; 
* OLFACTORY BULB 
Olfactory fila only 
Olfactory fila + a 
slight evagination | 
| 
| 
Same with slightly 
more evagination; 
cortex of tubereu- 
lum olfactorium 
just visible 
Same; cortex of tu- 
berculum more 
prominent 
and fissura prima; 
same 
tion of layers of 
bulb 
Same; pronounced 
islands of Calleja 
SEPTUM 
Thick wall 
Same 
Nucleus medialis 
septi 
Same plus margi- 
nal velum 
Same 
Beginning of nu- 
cleus lateralis 
septi 
Large nucleus lat- 
eralis septi + 
nucleus accum- 
bens, anterior 
commissure 
Same 
AREA CHORIOIDEA 
Area 
Summary of development 
Septum cvs Lamina 
ependymale anlern epithelialis 
Thin wall Thin | Thin wall 
wall 
Same Same | Concave out- 
ward 
Same Same | Lateral cho- 
roid plexus 
Same Same | Same 
Same -++ mar- | Same | Posterior limb 
ginal velum of lateral cho- 
roid plexus 
greater in 
extent 
Increase in Same | Same 
marginal 
velum, 
whole area 
thicker 
Wide margi- | Same | Same 
nal velum 
Same Same | Same 
Py 
t 
Corpus striatum — 
Ventro-lateral sector 
thicker 
Angulus ventralisap- 
pears; ventro-later- | 
al sector 
thicker 
Two hillocks and a 
few fibers in the 
lateral gray 
Same 
Marked increase in 
cells lying between 
the caudate nucleus 
much | 
and marginal ve- 
lum 
Same plus few inter- 
nal capsule fibers 
Nucleus lentiformis, 
internal and exter- — 
nal capsule fibers 
Same 
fa 
4 
e 
