84 E. P. CHURCHILL, JR. 



PLATE II. 



FIG. 4. Portion of foot of juv. A. imbecillis after remaining in fat solution 10 

 days. Epithelial cells not indicated. Fat shown heavily massed in epithelium 

 and adhering to muscle fibers and in corpuscles, a, muscle fibers in cross section. 

 b, blood corpuscles, c, muscle fibers in longitudinal section. 



FIG. 5. Portion of juv. A. imbecillis after remaining in filtered water 10 days. 

 Control for Fig. 4. 



FIG. 6. Portion of foot of same individual as in Fig. 4. a, epithelium, b, 

 muscle fibers in longitudinal section, c, muscle fibers in cross section, d, blood 

 corpuscles. 



FIG. 7. Portion of fold of foot of same individual as in Fig. 4. 1/12 oil im- 

 mersion, a, epithelial cells, b, muscle fibers. 



