File:The development of the mesonephras and the Müllerian duct in Amphibia (1904) (20881570482).jpg

Title: The development of the mesonephras and the Müllerian duct in Amphibia
Identifier: developmentofmes00hall (find matches)
Year: 1904 (1900s)
Authors: Hall, Robert William, 1872-
Subjects: Amphibians
Publisher: Cambridge, Mass. : (s. n. )
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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Text Appearing Before Image:
HALL- MESONEPHROS IN AMPHIBIA. Plate 2.
Text Appearing After Image:
PLATE 2 All figures are of cross-sections and are of Amb/ystoma unless otherwise indicated.
Fig. 13. Stage III. Through the middle of somite 13 of the right side. x 835.
Fig. 14. Rana. Through the anterior half of the seventh somite of the right side of a larva 4.5 mm. long. x 280.
Fig. 15. Rana, Through the last mesonephric blastula of the left side of a larva 8.5 mm. long. x 410. :
Fig. 16. Rana. ‘Through the eighth somite of the right side. x 380.
Fig. 17. Stage VIL Through the posterior part of somite 11 of the right side. x 560.
Fig. 18. Rana. One of the sections from which Figure 102 was constructed. The larva measured 11.5 mm. in length. x 410.
Fig. 19. Stage VI. Through the eleventh somites of both sides of the body, showing two mesonephiric blastulae. x 805.
Figs. 20-28. Sections of four mesonepliric units. All are from the posterior half of the sixteenth somite. That of Figure 22 is from the right side, the others from the left side of the body. The blastuls of Figure 20 is in reality smalier than that of Figure 21, Figure 20 being magnified 500 diameters, while Figures 21, 22, 23 are magnified only 340 diameters.
ago. . . . . Aorta. cav.glm. . . . Glomerular cavity. cav. nph’stm.. . Nephrostomal cavity. cav. sb'glm. . . Subglomerular cavity. cl.g . . . . Germ cell. coel, . . . . Coelome. coel. d.. . . . Dorsal division of body cavity. coel. so. . . . Cuelome of somite. coel. v.. . . . Ventral division of body cavity. cps. Bow. ex. . Outer watt of Bovwman’s capsule. cps. Bow. i. . . Inner wall of Bowman’s capsule, which forms the glomerular covering. crs. g. . . . Germinal ridge. crs. o'dt, . . . Oviducal welt. crv. cp. Mpg. . Neck of Malpighian body. dt. 1; dt. 2 . . Ducts from the first and second Müllerian evagination, dt. Muel. . . . Miillerian duct. dt. precoel. . . Precoelomic duct. dt. Wf... Wolflian duct. ec'drm. . . . Ectoderm. e'coel. . . . Epicoelome. e'mer. . . . Epimer. evg. 1,2,3 . . First, second, and third Müllerian evaginations. fnd. ms‘nph. . . Fundament of mesonephroa. glm. ... . Glomus or glomerulus. hp. . . . Liver. marg. p. tab. . . Vosterior margin of the “shelf.” ms’drin. l. . . “Lateral incsoderm. ms'ent. . . . Mesentery. ms'mer. . . . Mesomer. my'cm. . . . Myocomma. my'tm,. . . . Myotome. nph’stm. . . . Nephrostome. nph'tm, . . . Nephrotome. nt'cd, . . . Notochord. pi cr, . . . Pericardium. pn. . . . Lung. pn.+ par... Fusion of lung with the lateral bodywall. scl’tm. . . . Sclerotome. so’drm. l. . . Somatoderm of the lateral mesoderm. so’drm.t.... Tranaverse part of the somatic wall of the somite. so.v-l . . . Ventro-lateral angle of somite. spl'drm. l... Splanchnoderm of the lateral mesoderm. spl’drm.t. . . Transverse part of the splanchnic wall of somite. sul. . . . Groove. tab... “Shelf.” tae’eth. a . . Thickened epithelial band from the anterior evagination. tae. eth. β. . Thickened epithelial band from the posterior evagination. tae. eth. y . and tae. e'th. . . The band posterior to the fusion of portions α and β. That which is dorsal to the shelf is designated by γ, that ventral by γ'. tbl. ms’nph. . . Mesonephric (inner) tubule. tbl. nph'stm. . . Nephrostomal (outer) tubule. tl. pr’nph, 1, 2,3 First, second, and third pronephric tubules. trn.celg, . . . Collecting trunk. trt.in.. . . . Alimentary tract. va.sng. . . . Blood-vessel. vst.nph. . . . Nephrostomal vestibule or common nephrostome. Note About Images