GROWTH OF THE CEREBRAL CORTEX Birla 
TABLE 12 
Giving for man and other mammals the size of the largest ganglion cells in the lam- 
ina ganglionaris of the cerebral cortex as presented by different authors. Data 
are arranged according to the order of the average diameters 
MAXIMUM SIZE 
REPORTED IN MICRA 
NAME OF SPECIES Average Author 
Dinear diameter or 
diameters pcre ry 
product 
Homo sapiens, (man) i. ..4..o0.A2te ae aaeese es =| COXK120 85 Betz 
EO OS aplens) (man): ease eae eee eae OO LO, 83 Lewis 
Homoisapiens: (mam)h.) esse see once 53x 106 WS Brodmann 
OMOPs a plenish (main) erent eileen eee 40X 80 iC Hammarberg 
BSNS. (Oni As eas oS accraeeh. Stee ee 60133 90 Brodmann 
Helistivorisa (irene oe een Lee seer 60> 100 78 Brodmann 
Cercoleptus caudivolvulus (kinkajou)........ 50110 74 Brodmann 
Winsuisisymacuss (bea) ie annmerrccie caters coer 53 X 100 73 Brodmann 
Ttinc liste) (otovsll Xow), be oo Sod bo nabs Oe uoatinccoee 44x 80 59 Brodmann 
Helishdomestica (cat)... ..02.:.5.-) 4 Le ee Ne 32 106 58 Lewis 
Cercopithecus mona (African monkey).......| 40 72 54 Brodmann 
Blephase(clephant) airs eae ceeerrne BoD< 60 46 Brodmann 
IGE TINIE Ean Ooh teeta acct ook ysrie pa iteee Ne leks 30 70 46 Brodmann 
Mus norvegicus (Norway rat)................ 33x 48 40 Sugita 
Ovigumusimon (SHEED). 26. 6 cheb ee ae. 2s 23 65 39 Lewis 
SULTS) (Up) ee a Re ho Cn aR A 27x 48 36 Lewis 
Mus norvegicus albinus (albino rat)......... 30 42 36 Sugita 
Hepusscunieuluss(@abbit)iasceee sce saeee eee 18x 60 33 Lewis 
Gepus cuniculus (rabbit). ..:0.0.5..-8-.-..----| 18x 40 27 Brodmann 
Pteropus edwardsii (vampire bat)............ 16X 36 24 Brodmann 
Miisimirsculitise mouse) sees sssae- sale eee are aloe 2O 19 Isenschmid 
There are no other systematic investigations on the postnatal 
development of the cortical nerve cells in mammals, although 
there are some studies on the growth of nerve cells in the fetus, 
among which the researches by His (’04) (see footnote 2), 
Koelliker (96), and Vignal (’89) are the most important. 
Table 12 was compiled by me in order to compare the size of 
the largest ganglion cells in the lamina ganglionaris (the fifth 
layer of Brodmann) of the cerebral cortex of man and some 
other mammals. The tabulated data were taken from Brod- 
mann (’09), Lewis (’79, ’82), Hammarberg (95), and others. 
