Again, as stated above, I have not been able to find any such evidence of nerves in connection with the gland cells themselves. In case, however, such an arrangement or something similar existed, why should it have been impossible for me to find evidences of such as well here on the gland cells as on the capillaries; and should they not be more readily found in the gland than in the capillary, inasmuch as we have larger structures to deal with here in the gland. The conclusion then regarding the nerve-endings to which my work has led me are these: There were no special nerve-endings found in connection with the gland cells themselves. _We find, however, upon the capillaries evidence of the same kind of fine nucleated fibrils, which we find to be present in the fine nerve twigs_, as far as we can follow them in their course towards their final distribution. To explain the action of nerves on the process of secretion we would have to assume either that the nerves accompanying the capillaries also influence the gland cells, or that the glands are stimulated to activity by some changes in the condition of the capillary wall furnishing a greater amount of oxygen and nutritive fluids. The results are partly negative, partly positive. The latter I wish to emphasize, believing it worthy of attention, as it may throw light on the physiology of the capillary wall, which seems to be altogether too much neglected. The negative I have offered, knowing well enough that such negative results must be accepted as final with much hesitation. To any one feeling inclined to undertake investigation on this gland, I would make a few suggestions: (1) Make sections through gland hardened in bichromate of potash, or alcohol, and stain with staining fluids. (2) Compare in material prepared as above described, the vascular supply of duct and gland substance proper. (3) Compare gland and duct cells. (4) Find the nuclei of the membrana propria and compare the same with the nuclei of the gland cells. (5) See if you can examine the same nucleus from different sides. Do you think that the demilune of books and the nucleus of the membrana propria might be the same thing? (6) Prepare pieces of the membrana propria covering the alveoli. What is your opinion—is there a membrane or only a reticulum of connective tissue cells? (7) Prepare pieces of membrana propria of duct. (8) Can you find the nuclei of the duct, and other nuclei on the exterior of the capillaries? (9) Can you find pieces of capillaries belonging to the alveoli, and do you find any nuclei on them? (10) Examine the wall of the duct in injected and uninjected material, both stained. (11) Follow the bloodvessels—can you find nerves on the walls of arteries? (12) Of what structure do you find the root of a little lobule to consist?