. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 70 COMPARATIVE PHYSIOLOOY. these parts together constitute that portion (blastoderm) of the fowl's egg which w alone directly concerned in reproduction, all the rest serving for nutrition and protection. The appear- ance of relative opacity in some of the parts marked off as above is to be explained by thickening in the oell-layen of which they are con^posed. The Origin «f the Fo
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 70 COMPARATIVE PHYSIOLOOY. these parts together constitute that portion (blastoderm) of the fowl's egg which w alone directly concerned in reproduction, all the rest serving for nutrition and protection. The appear- ance of relative opacity in some of the parts marked off as above is to be explained by thickening in the oell-layen of which they are con^posed. The Origin «f the Fowl'i Bgg.—The ovary of a young but mature hen conaists of a mass of connective tissue {stroma), 11. Fie. 88.—VarioaB «tagM In the «egmentstlon of a fowl's egg (KOIliker). abundantly supplied with blood-vessels, from which hang the capsules which contain the ova in all stages of development, so that the whole siiggests, but for the color, a bunch of grapes in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Mills, Wesley, 1847-1915. New York : D. Appleton; London : Caxton House
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