Lizard Descending Pathways 
111 
Figure 4. Plots of axonal degeneration at the brachial and lumbar enlargements of the lizard 
spinal cord following incomplete hemisections at the first cord segment. See legend of Figure 
3 for details. Notice that the pattern of degeneration following these lesions is the same as 
that seen following a complete hemisection (Fig. 3), but with slightly less intensity in the 
medial regions of spinal gray. Reproduced from Cruce (1975), Brain, Behavior, and Evolu- 
tion, with permission of the publisher. 
