The alligator and its allies . the feeding season. The other animals from which tissues were takenwere considerably smaller than the one mentionedabove. They were killed early in the fall, afterhaving been fed regularly for about five monthsupon bits of meat, both raw and cooked. The Tongue. The covering of the tongue wasstudied in two regions, near the free end, andtowards the base. A section of the former region, drawn under highpower, is shown in Figure 36. It consists of adense mass of fibrous tissue, a, and small scatteredcells, overlaid by a stratified epithelium of eightor ten layers. O
The alligator and its allies . the feeding season. The other animals from which tissues were takenwere considerably smaller than the one mentionedabove. They were killed early in the fall, afterhaving been fed regularly for about five monthsupon bits of meat, both raw and cooked. The Tongue. The covering of the tongue wasstudied in two regions, near the free end, andtowards the base. A section of the former region, drawn under highpower, is shown in Figure 36. It consists of adense mass of fibrous tissue, a, and small scatteredcells, overlaid by a stratified epithelium of eightor ten layers. Only a small part of the fibrousbase, just beneath the epithelium, is here is a dense areolar tissue with the elastic fibersapparently predominating. The epithelium, e, consists, as has just beensaid, of about eight or ten layers of cells, those atthe base being generally cuboidal in shape, whiletowards the surface the cells become more andmore flattened until at the surface they form i6o The Allii^fator and Its Allies. a thick horny layer, li, in which no nuclei can beseen. The cells of the horny layer are flattened intomere fibers, which, at places, are seen projecting from the sur-face. The bound-ary between thehorny cells andthose beneath isquite distinct,though perhapsnot quite so sharpas shown in thefigm-e under dis-cussion. In a previouspaper, the writernoted that thedorsum of thetongue is coveredwith small, evenly distributed papillae, easily seenby aid of a hand lens. These so-called papillceare here seen to be hardly papillae at all, but smallfolds or wrinkles, although the epithelium is some-what thickened at intervals. No glands are to beseen in this region of the tongue. The only difference between the anterior regionof the tongue during hibernation and during thefeeding season seems to be in the scal}^ layer of theepithelium. Instead of the compact, sharply dif-ferentiated layer of scaly cells seen in Figure 36, Fig. 36. The covering of the anterior re-gio
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
