The early development of the cat - figures

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Hill JP. and Tribe M. The early development of the cat (Felis domestica). (1924) Quart. J. Microsc. Sci., 68: 513-602.

1924 Cat Development: 1. Ovum of the Cat | 2. Process of Cleavage | 3. Formation of the Blastocyst | 4. Discussion | Plates | cat

Explanation of Plates

Illustrating Professor J. P. Hill's and Dr. M. Tribe's paper on 'The Early Development of the Cat (Felis domestica.)'.

List of Common Reference Letters

bl.c, blastocyst-cavity; c.e, central cell; c.e. 'corps enigmatique' ; c.r., corona radiata; c.tr., covering trophoblast; Dp., deutoplasmic pole; e.ect., embryonal ectoderm; e.dm., eliminated deutoplasm; ent., entoderm; f.gl., fat-globules ; i.c.m., inner cell-mass (embryonal knot); m.z., mitochondrial zone; mes., mesenchyme; Pb., polar bady; Pch., ' prochorion ' ; ♂ Pn., male pronucleus ; ♀ Pn., female pronucleus ; Pp., plastic pole ; p.pl., prochordal plate ; rsp., remains of first cleavage- spindle ; sh.ect., shield-ectoderm ; sp., sperm-heads ; tr., trophoblast; z.p., zona.

Felis Domestica.


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Pages where the terms "Historic Textbook" and "Historic Embryology" appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms and interpretations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

Plate 24

Egg 1, section 14/1 ( x 700), showing persistent corona radiata (c.r.), the zona {z.p.), sperm-heads (sp.), the mitochondrial zone (m.z.), and central region of ovum with fat-globule spaces and the male pronucleus.


Fig. 2. — Egg 11. Combination fig. (x 700) (section 5/5 and polar bodies from section 7 & 8/5). Pronuclei with chromosomes. Pb. 1, fust polar body; Pb. 2, second polar body.


Fig. 3. — Egg 12. Section 5/2 (x 640), first cleavage, rsp., remains of spindle-fibres ; Pb., polar body.


Fig. 4.— Egg 13. — Section 7/1 ( x 640), two-celled egg, the smaller blastomere (on right) with lobed nucleus, the larger blastomere in process of division, c.e., ' corps enigmatique ' ; e.dm., eliminated deutop!asm.

Hill1924 plate24.jpg

Plate 25

Figs. 5 and 6. — Egg 6, sections (x700). Fig.5 (section 5/1) nearer plastic pole, showing male and female pronuclei, 'corps 6nigmatique' (c.e.), and fat- globules. Fig. 6 (section 3/2) nearer deutoplasmio pole, fat-globules more abundant.


Fig. 7. — Egg 5, section 4/2 (x 700). female pronucleus.


Fig. 8. — Egg 7. Combination fig. (x 700) (section 4/2 and male pronucleus inserted from section 2/2). male pronucleus larger than female. Pb., polar bodies.


Fig. 9. — Egg 10. Combination fig. (x700) (section 6/1 and male pronucleus larger than female, from section 8/1). Pp., plastic jole; Dp., deutoplasmic pole. Note centrosphere applied to female pronucleus.

Hill1924 plate25.jpg

Plate 26

Figs. 10 and 11. — Egg 18. Microphotographs (x640) of two adjacent sections, 8 & 9/3. Seven-celled egg.


Figs. 12 and 13. — Egg 23. — Microphotographs ( x 640), fig.12, section 2/2; Fig. 13, section 4/2. Twenty-two-celled egg. c.c. 6 and c.c. 12, central cells; c.e., ' corps enigmatique'.


Figs. 14, 15, 16. — Egg 24. Microphotographs (x 640) of three adjoining sections 1, 2 & 3/2. Twenty-three-celled egg. c.c. 11 and c c 13, central cells.


Fig. 17. — Egg 28. Microphotograph, section 6/2 {x about 650).


Fig. 18. — Blastocyst 50. Microphotograph (x just over 400), section 9/7. p.pl., prochordal plate.


Fig. 19. — Blastocyst 54 (Dog). Microphotograph (x 383) of section through prochordal plate, showing cells of plate in process of division. pch., ' prochorion ' outside zona {z.p.).

Hill1924 plate26.jpg

Plate 27

Hill1924 plate27-1.jpg Hill1924 plate27-2.jpg

Fig. 20.—Egg 19. Combination fig. (x 640), section 7 & 8/2.

Fig. 21.—Egg 20. Combination fig. (x640), section 4 & 5/3. c.c. I, central cell 12.

Fig. 22.—Morula 29.; tr., trophoblast. Section 3/4 (x 640). c.c, central cells (inner cell- mass)

Figs. 23 and 24.—Morula 30, sections 2/2 and 6/2 (x640). i.c.m., inner cell-mass ; tr., trophoblast.

Fig. 25.—Morula 31. Section 1/4 (x 640). bl.c, first appearance of blastocyst-cavity ; i.c.m., inner cell-mass ; tr., trophoblast.

Fig. 26.—Egg 28. Section 4/2 (x 640). Sixty-three-celled egg. «.c, central cell; tr., trophoblast.

Fig. 27.—Egg 25. Section 11/1 ( x 640). Twenty-four-celled egg. c.c, central cell.

Plate 28

Hill1924 plate28-1.jpg Hill1924 plate28-2.jpg

Fig. 28.—Blastocyst 32. Section 6/2 (x 640). bl.c, blastocyst-cavity.

Fig. 29.—Blastocyst 33. Section 10/3 ( x 640). bl.c, blastocyst-cavity; ent., entoderm cell (?); i.c.m., inner cell-mass ; tr,, trophoblast.

Figs. 30 and 32.—Blastocyst 36. Sections 10/4 and 1/5 ( x 400). c.tr., covering trophoblast (Rauher's layer); e.ect., mass of embryonal ectoderm ; ent., entoderm.

Fig. 31.—Blastocyst 37. Section 8/2 (x400). dr., covering trophoblast ; e.ect., mass of embryonal ectoderm ; ent., entoderm.

Figs. 33 a, 33 6, 33 c—Blastocyst 38, sections 1/2, 16/1, and 2/2 (x 400). In fig. 33 a, which passes through the central region of the embryonal ecto- derm (e.ect.), the covering trophoblast has disappeared and a slight depression is present on the surface of the ectodermal mass, the cells of which are now assuming a columnar arrangement. The covering trophobla3t (c.tr.) is still present over the more peripheral portion of the embryonal ectoderm (figs. 33 6 and 33 c).

Fig. 34.—Blastocyst 42. Section 7/2 ( x 420). sh.ect., shield-ectoderm.

Plate 29

Fig. 35.—Blastocyst 43. Section 4/4 (x 400).


Fig. 36.—Blastocyst 52. Section (x550) through bilaminar wall of blastocyst, away from embryonal area, tr., trophoblast; int., extra- embryonal entoderm.


Fig. 37.—Blastocyst 45. Section 14/3 ( x 400). p.pl., prochordal plate.


Fig. 38.—Blastocyst 53. Section, 7.2.2 (x 300), along the antero-posterior axis of the embryonal area. • p.pl., prochordal plale;- sh.ect., shield-ectoderm; ent., entoderm.- Cards.


Fig. 39.—Blastocyst 54 (Dog). SectioD, 12.1.3 (x400), through pro-chordal plate (p.pl.). mes., mesenchyme cells, proliferated iron, the plate.


Fig. 40.—Blastocyst 54 (Dog). Section, 8.2.3 (x 400), passing through hinder region of embryonal area.

Hill1924 plate29.jpg


Historic Disclaimer - information about historic embryology pages 
Mark Hill.jpg
Pages where the terms "Historic Textbook" and "Historic Embryology" appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms and interpretations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
1924 Cat Development: 1. Ovum of the Cat | 2. Process of Cleavage | 3. Formation of the Blastocyst | 4. Discussion | Plates | cat

Reference

Hill, J. P., and Tribe, M. 1924. The early development of the cat (Felis domestica). Quart. J. Microsc. Sci, 68, 513-602.



Cite this page: Hill, M.A. (2019, September 17) Embryology The early development of the cat - figures. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/The_early_development_of_the_cat_-_figures

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