3 
288 MR. J. D. MACDONALD ON THE ANATOMY OF NAUTILUS UMBILICATUS. 
Fig. 1 1. Three of the zigzag longitudinal folds taken from the bottom of a follicle. 
. 12. A few of the hollow papillae from near the attached end of ditto. 
. 13. Outer surface of a small fragment of the epithelial lining, showing the slit- 
like opening of a hollow process. 
Fig. 14. Five cells of the same pavement, more highly magnified, to show the nuclei 
surrounded by minute fatty globules, reminding one of the condition of the 
epithelial cells of the human kidney in the early stage of Bright’s disease. 
