Lim.men. 
Fas. den. 
Fis hip. 
Cor. sfr. 
Nuc.med. sept. 
Seyi gear 
pee a —— 
Se BRO AO ee 
+. 
“aa 
Si, 
Figs. 33 to 37 These are photographs of selected sections from a transverse 
series of the telencephalon of a 20-mm. human embryo, no. 460, at the Carnegie 
Institution, the Mall Collection. X25. A modelof the forebrain may be studied 
by turning to figure 17. The levels at which typical sections were photographed 
are indicated. 
142 
