PLATE 1 



EXPLANATION OF FIGURES 



All figures drawn with the aid of a drawing ocular at a magnification of 100 

 diameters from haematoxylin and ervthrosin stained sections cut 10 n thick. 

 X 75. 



1 Section through normal right cerebral hemisphere of Amblystoma host of 

 a series I transplantation 180 ^ caudad of anterior pole. 



2 Section 190 /x caudad of figure 1. 



3 . Section 100 ti caudad of figure 2. 



4 Section through transplanted telencephalon, series I, 140 ^ caudad of 

 anterior pole. 



5 Section 160 m caudad of figure 4. 



6 Section 380 /j. caudad of figure 5. 



7 Section through transplanted telencephalon, series II, 140 /x caudad of 

 anterior pole. 



8 Section ISO /j. caudad of figure 7. 



9 Section 200 ^ caudad of figure 8. 



ABBREVIATIONS 



lat.f.b.t., lateral forebrain tract prim.hip., primordium hi])pocampi 



med./.6.<., medial forebrain tract ir.olf.d.lat., tractus olfactorius dorso- 



n.med.s., nucleus medianus septi lateralis 

 n.olf.ant., nucleus olfactorius anterior 



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