GROWTH OF THE CEREBRAL CORTEX 25 
TABLE 12—Continued 
é m LAMINA PYRAMIDALIS LAMINA GANGLIONARIS 
& 
& a 
PS Cellbody | Nucleus | Cell body | Nucleus 
SERIES, LITTER AND io z diameters diameters diameters diameters 
GROUP a me £ 
Erin SVEN eee by Bees IN ued | Boy’) Geshu MAISON SEA gst 
= < is) ical 4 ical 4] Sal 4 HB 4 
grams Be Me B A B B Me Me 
Series IT 
Fa, b Te OKSSZ ileal ISSO Te USGA MOL Sle 2esOlleolmloes 
c-l ee M204 Pes? | ASO SZ Ol els7ip 1428) 1920 F300 73! 19a 
Series III 
G a-g T. I |0.844| 1.24) 14.0) 19.8] 13.1] 14.3] 17.9] 28.4) 16.8) 18.4 
h-j TUT 54126) s13s9) 19e8iF 1226) 1329) 18.3) 28) 7 1622) Tse 
Average \ Ab. IO. 74s} 1.21) 13.6 OR e265) Ss eOleliiao|e2Oes|ellomsl mele 
(Ser. I-IIT) if T. IL}1.107|) 1.29) 14.2) 20.4) 13.1) 14.6} 19.1] 29.4) 16.9] 19.1 
Average i C. I 10.700) 1.15) 14.7] 18.9) 13.3) 14.6) 19.3) 25.7) 16.6) 18.3 
(Ser. I) \ Cem 226 |e 22| Sb 2 O44 2 53 19e Al oOeh lites oes 
nucleus is much more affected by the underfeeding than that of 
the cell body. In the underfed brains of T. I groups the average 
diameter of the nucleus is smaller by 13.9 per cent (in the pyra- 
mids by 15.8 per cent and in the ganglion cells by 12.5 per cent) 
and in those of T. II groups it is smaller by 8.0 per cent (in the 
pyramids by 11.0 per cent and in the ganglion cells by 5.1 per 
cent) than the standard for the same age. The deficiency in the 
average diameter of the cell body by 6 to 12 per cent and that 
of the nucleus by 8 to 14 per cent correspond to the inferior- 
ity in volume of about 20 to 45 per cent and 25 to 50 per cent, 
respectively. 
On the other hand, in the control brains of all weights, the size 
of the cell body and of the nucleus have proved to be also some- 
what smaller than the standards, but the deviations are not so 
much in comparison with the underfed, the deficiency in the 
average diameters of the cell body and the nucleus being on the 
average 5.3 per cent (table 13). 
