The Ranger (San Antonio, Tex.), Vol. 35, No. 2, Ed. 1 Monday, September 26, 1960 - The Portal to Texas History
![The development of the chick; an introduction to embryology. Birds -- Embryology. Fig. 135. — Circulation in the embryo and yolk-sac after 74 hours' incuba- tion. Stage of about 27 s The development of the chick; an introduction to embryology. Birds -- Embryology. Fig. 135. — Circulation in the embryo and yolk-sac after 74 hours' incuba- tion. Stage of about 27 s](https://c8.alamy.com/comp/PFA7X6/the-development-of-the-chick-an-introduction-to-embryology-birds-embryology-fig-135-circulation-in-the-embryo-and-yolk-sac-after-74-hours-incuba-tion-stage-of-about-27-s-from-below-injected-after-popoff-1-marginal-vein-2-r-21-right-and-left-anterior-vitelline-veins-sur-rounding-the-mesoderm-free-area-3-anterior-intestinal-portal-4-in-termediate-veins-connecting-with-the-venous-network-centrally-5-right-dorsal-aorta-6-posterior-vitelline-vein-in-process-of-formation-vitel-line-arteries-note-that-the-right-anterior-vitelline-vein-2-r-is-much-atrophied-pl-PFA7X6.jpg)
The development of the chick; an introduction to embryology. Birds -- Embryology. Fig. 135. — Circulation in the embryo and yolk-sac after 74 hours' incuba- tion. Stage of about 27 s
![The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 133. — Circulation in the embryo and the yolk-sac. Stage of about 16 s; from below. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 133. — Circulation in the embryo and the yolk-sac. Stage of about 16 s; from below.](https://c8.alamy.com/comp/PFA7P4/the-development-of-the-chick-an-introduction-to-embryology-embryology-chickens-embryos-fig-133-circulation-in-the-embryo-and-the-yolk-sac-stage-of-about-16-s-from-below-the-vitelline-arteries-are-beginning-to-differentiate-out-of-the-vascular-network-particularly-on-the-left-side-observers-right-injected-after-popoff-1-marginal-vein-2-region-of-venous-network-3-first-and-second-aortic-arches-4-r-41-right-and-left-anterior-vitelline-veins-5-heart-5-anterior-intestinal-portal-7-aorto-differentiation-9-blood-islands-8-vitelline-arteries-in-process-of-PFA7P4.jpg)
The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 133. — Circulation in the embryo and the yolk-sac. Stage of about 16 s; from below.
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![The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 134. — Circulation in the embryo and the yolk-sac at the stage of about 22 s, The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 134. — Circulation in the embryo and the yolk-sac at the stage of about 22 s,](https://c8.alamy.com/comp/RCTC99/the-development-of-the-chick-an-introduction-to-embryology-embryology-chickens-embryos-fig-134-circulation-in-the-embryo-and-the-yolk-sac-at-the-stage-of-about-22-s-drawn-from-below-note-differentiation-of-branches-of-the-vitelline-arteries-injected-after-popoff-1-marginal-vein-2-region-of-venous-network-3-carotid-loop-4-r-41-right-and-left-anterior-vitelline-veins-5-heart-6-anterior-intes-tinal-portal-7-dorsal-aorta-8-branches-of-vitelline-arteries-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-RCTC99.jpg)
The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 134. — Circulation in the embryo and the yolk-sac at the stage of about 22 s,
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