. Journal of morphology. n marinus at a stage indicated byFig. 10, PI. XX (X 90). Fig. 6. Saggital section of gastrula of Petromyzon marinus, little later thanFig. 10, PI. XX. Fig. 7. Saggital section of Petromyzon marinus after Hatta. Fig. 8. Saggital section of Petromyzon marinus showing teloblast. Fig. 9. Transverse section of Amblystoma, at stage intermediate betweenFigs. 4 and 5, PI. XX (X90). Fig. id. Section through caudal vesicle of Lophius at stage shown in Fig. 24,PI. XX (Xioo). Fig. II. Portion of 10 marked {per.) more highly magnified. Fig. 12. Section across post-embryonic portion
. Journal of morphology. n marinus at a stage indicated byFig. 10, PI. XX (X 90). Fig. 6. Saggital section of gastrula of Petromyzon marinus, little later thanFig. 10, PI. XX. Fig. 7. Saggital section of Petromyzon marinus after Hatta. Fig. 8. Saggital section of Petromyzon marinus showing teloblast. Fig. 9. Transverse section of Amblystoma, at stage intermediate betweenFigs. 4 and 5, PI. XX (X90). Fig. id. Section through caudal vesicle of Lophius at stage shown in Fig. 24,PI. XX (Xioo). Fig. II. Portion of 10 marked {per.) more highly magnified. Fig. 12. Section across post-embryonic portion of germ-ring of Amiurus at astage indicated by Fig. 15, PI. XX (X 300). Fig. 13. Saggital section through posterior portion of embryo of Lophias atstage indicated by Fig. 21, PI. XX (X 250). Fig. 14. Saggital section through posterior portion of embryo of Lophius atstage indicated by Fig. 22, PI. XX (X 250). Fig. 15. Saggital section through same region at a later stage (X 250). .Joiinuil ofM()ii)hol()(ii; tfi^^,. 4i8 EYCLESHYMER. EXPLANATION OF PLATE XXIL Figs. 1-4. Successive phases in closure of neural folds of Amblystoma (X 15).Figs. 5-8. Successive phases in closure of neural folds of Rana palustris show-ing the infolding of the optic pits, and the formation and extension of the oraland olfactory grooves (X 15). Figs. 9-1 i. Successive phases in closure of neural folds of Necturus, showingformation of optic vesicles (X 10). Fig. 12. Transverse section through dark areas shown in Fig. 5 (X 120). Transverse section through same areas as shown in Fig. 6 (X 130).Transverse section through same areas as shown in Fig. 7 (X 100).Transverse section along line 15 in Fig. 10 (X90)Transverse section along line 16 in Fig. 11 (x8o).Transverse section along line 17 in Fig. i (X 100) Fig. 13- Fig. 14. Fig. 15- Fig. 16. Fig. 17- Joiirna/. of Morp/iologi/ .Pi
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Keywords: ., bookcentury1800, bookdecade1, booksubjectphysiology, bookyear1887
