Smithsonian symbol           In a previous paper ( 6 ) the writer described the general features in the development of the American Alligator; and in other papers special features were taken up in more detail. In the present paper the development of the enteron is described in detail, but the derivatives of the digestive tract (liver, pancreas, lungs, etc.) are mentioned only incidentally; the development of these latter structures may be described in a later paper. No detailed descripti

In a previous paper ( 6 ) the writer described the general features in the development of the American Alligator; and in other papers special features were taken up in more detail. In the present paper the development of the enteron is described in detail, but the derivatives of the digestive tract (liver, pancreas, lungs, etc.) are mentioned only incidentally; the development of these latter structures may be described in a later paper. No detailed description of the histological changes taking

5. Reese, A. M. : The Nasal Passages of the Florida Alligator. Proc. Acad. Nat. Sc. Phila., 1901. 6. Reese, A. M. : The Development of the American Alligator. Smith. Misc. Coll., vol. 51, No. 1791, pp. 1-66, 1908. The word "Plate" refers to the physical pages on which the Figures were printed. The word is not used as an illustration identifier. The complete caption text from this section has been added to each Figure. In the original, Figures were labeled only with number and letter. Based on th

Figure 2 A . A sagittal section of an embryo of the stage shown in figure 2. × 43. Figure 2 B . A transverse section through the headfold of an embryo of the stage shown in figure 2. × 43. Figure 3. A dorsal view of an embryo with about fifteen pairs of somites. × 20. Figures 3 A - 3 D . A series of transverse sections through an embryo of the stage of the one shown in figure 3. × 43. Figure 4. A surface view of an embryo with about twenty pairs of somites. × (about) 15. Figures 4 A - 4 D . A se