PLATE IV. 
NUCLEAR CHANGES. 
Changes in epidermal nuclei during regeneration. The groups of nuclei in 
Figs. 11-13 taken from the same region of the limb, 7. e., on the same side of 
the limb just below the breaking joint; in each case (c) and (d) are nearer 
the center of the wound than (a) and (0). 
Fic. 11. Normal nuclei before the amputation of the limb. >< 2000. 
Wie. 12. Regeneration, 14 hours. < 2000. 
Fig. 18. Regeneration, 24 hours. x 2000. 
Fic. 14. Regeneration, 2 days, 2 hours. Nuclei undergoing mitosis; @ 
(apparently), prophase; b, anaphase. > 2000. 
Fig. 15. Regeneration, 5 days, 10 hours. Nuclei in the epidermal wall of 
the regenerating limb bud, in the region of the invagination (in) for the 
flexor muscle in the meropodite. >< 1250. 
