LIST OF PLATES. 



NUCLEI IN NERVE- CELLS. 



ANIMAL. 



Alligator. 



Testudo. 



Chelydra. 



Rana. 

 Phrynosoma. 



NUMBERS OF PLATES GROUPED, EACH GROUP REPRE- 

 SENTING SECTIONS MADE FROM THE SAME INDIVIDUAL AND 

 PHOTOGRAPHED WITH THE SAME MAGNIFYING POWER. 



- (L-II.) (III.-IV.) (V. i-iv) (VI. i-iv) (VII.-VIII.) 

 (IX.-X. & CXIII.) (XI.-XII.) (XIII. i-iv) (XVI.-XVII.) 

 (XIX. i-iv) (XX. i-iv) (XXI I. -XXI 1 1.) (XXIV.-XXV.) 

 (XXVI. -XXVI I.) (XXXIV.-XXXV.) (XXXVIII.-XL., XLIL- 

 XLIV., LIX.-LX.) (XLIX.-L.) (LVI. -v) (XCIX.-C.) 

 (CI.-CIV.) (CV.-CIX) (CX.-CXI.) (CXII. i-iv) 



