. A manual of zoology. 482 MANUAL OF ZOOLOGY sect. The left ovary (ov) is a large organ in the adult bird, its surface studded with follicles or ovisacs, varying in size from about 15 mm. in diameter downwards, and each containing a single ovum. The left oviduct (/. od) is long and convoluted ; its anterior end is enlarged to form a wide, inembranous ccelomic funnel (/. od") into which the adr. cl$ Fig 292.—Columba livia Ma'e urinogenital organs, adr, ad- renal; cl. 2, urodamm; cl. J, proctodeum; k, kidney; ts, testis, that of the right side dis- placed; Mr, ureter; nr', aper- ture of ure
. A manual of zoology. 482 MANUAL OF ZOOLOGY sect. The left ovary (ov) is a large organ in the adult bird, its surface studded with follicles or ovisacs, varying in size from about 15 mm. in diameter downwards, and each containing a single ovum. The left oviduct (/. od) is long and convoluted ; its anterior end is enlarged to form a wide, inembranous ccelomic funnel (/. od") into which the adr. cl$ Fig 292.—Columba livia Ma'e urinogenital organs, adr, ad- renal; cl. 2, urodamm; cl. J, proctodeum; k, kidney; ts, testis, that of the right side dis- placed; Mr, ureter; nr', aper- ture of ureter; vd, vas deferens; Td\ its cloacal aperture; v. s, vesicula seminalis. ( From Par- ker's Zootomy.) Fie. 293.—Columba livia. Female urino- genital organs, cl. s, urodaeum; cl. ?, proctodeum; k, kidney; l. od, left ovi- duct; I. od', its cloacal aperture; I. od", its ccelomic funnel; /. od'", its ccelomic aperture; oi\ ovary: r. od, right oviduct; ', its cloacal aperture; ur, ureter; 7ir', its cloacal aperture. (From Parker's Zootomy.) ripe ova pass on their liberation from the ovisacs ; the rest of the tube has thick, muscular walls, lined with glandular epithelium, and opens into the urodaeum. Internal impregnation takes place. As the ova or. 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1900
