A high-power drawing of a portion of one of the glands is shown in Figure 38. The large alveolus, _av_, to the left, is from the peripheral region of the gland and is surrounded, on its free side, by the areolar tissue described above. The inter-alveolar spaces, which are somewhat exaggerated in the figure, are filled with fibers which are arranged more or less in layers and hence appears different from the surrounding areolar tissue. The alveoli are circular or elongated in section, and have fairly wide lumina. They are lined with a single layer of columnar or cuboidal cells which are very granular, so that their walls are difficult to determine. Each cell contains, near its base, a very large, usually spherical nucleus. These nuclei stain darkly and give the dark appearance to the glands as seen under low magnification, especially in rather thick sections. During feeding the epithelium of this region of the tongue consists of fewer layers of cells than during hibernation but is otherwise unchanged from what is described above. The glands consist, at least in all of the material examined, of much fewer alveoli than are shown in Figure 37. One of these glands is shown in Figure 39. Although no more care was used in fixation than in the corresponding tissue of the hibernating animal the glands here show their cell details far more clearly than in the former tissue; this may have been partly due to the latter sections being thinner. The glands are of a compound, tubulo-alveolar type; although numerous sections through ducts were obtained (as in Fig. 39), no details of these ducts could be seen. [Illustration: FIG. 39. One of the glands from the posterior region of the tongue of the feeding animal, under somewhat higher magnification than used in Figure 37; _av_, alveolus; _d_, duct of gland; _e_, stratified epithelium.] As noted above, and as may be seen by comparing Figures 37 and 39, the gland during hibernation, at least in the animals studied, consists of many more alveoli than during the feeding season; this, of course, might not prove to be always the case if larger numbers of animals were studied; the difference in the ages of the animals might have caused this difference in the glands. In the material studied the largest glands from the hibernating animals consist of more than twice as many alveoli as the glands in the feeding animals. As seen under high magnification there is no noticeable difference in the glands at the two seasons. Rathke has given the name of “Geschmackwärzchen” to the conical projections found on the dorsum of the crocodilian tongue; they are distinguished by their softness and thinner epithelial covering from the cones that, in many of these animals, bear the openings of the mucous glands.